Yup, there were plenty of times during his duel with Yoda that Sidious evinced strain or fear, indicating that Yoda was a significant challenge. Not so much from the Zabraks, who are less challenge and more in the order of absolute fodder.
Fear, yes. Strain? Where? He is laughing and smiling whole time, except when dodged platform and at the end of final contest. Again, at which point you saw strain on his face? All, I could see is his permanent wrinkles.
As you concede, it's reasonable to conclude that distance plays a role in the strength and effectiveness of Force powers. Else Jedi or Sith would be smiting one another across interstellar distances without ever having to confront one another face-to-face.Dooku was already plotting behind Sidious's back with both Ventress and Opress. Your insinuations that the Count is a fetishist with a bent for asphyxiation notwithstanding, I'd say it would be pretty damn hard for anyone (let alone a Sith Lord for whom survival is priority one) to not reflexively try to defend one's self.
But even being generous and granting you the assumption that Dooku didn't defend himself, we're back to square one: why wouldn't he try to defend himself from a man he wants to murder anyway?
The answer is obvious: because Sidious is that much more powerful than he is and Dooku knew it wouldn't end well for him. Either way, we're back to the inescapable fact that Sidious is well beyond the Count and there's nothing you can do to mitigate that truth. 😬
Dooku is not stupid. He knows that he is below Sidious. Had he counterattacked Sidious, inevitable hunt down would follow.
Your contextless excerpt notwithstanding, there are some critical differences between Luke being throttled by the Qrephs and Sidious throttling the Zabraks. First: We know from the passage that Luke was indeed caught off guard; there's no proof that the Zabraks were. Second: Luke had no idea where the Qrephs were and much of his desperate flailing had to do with locating the unseen threat in order to combat it whereas Sidious was standing in their line of sight, visible and known, and the Zabraks were still helpless.
And there is critical difference that maintains my point that you missed out. Zabraks are not Luke skywalker. Majority of characters are helpless, when choked or electrocuted. It is consistently observed throughout series.
Anakin and Kenobi couldn't break Ventress' Force choke, despite the fact that she is below both of them, only ship reverberation saved them.
Yet, later Ventress couldn't break out of Anakin's Force choke.
Dooku was able to Force choke Anakin, Ventress and Kenobi. Yet, was unable to break free from Opress' choke, despite the fact that Opress' attention was split on choking Ventress as well.
When Sidious caught Dooku with Force choke, it could as well mean that Dooku wouldn't be able to break free like he couldn't break free from amateur Opress.
I accept your concession about their spines. But you have no proof that the attack was unexpected. You have no proof that these two particularly durable Force users were damaged or incapacitated by their impact against the glass, particularly when we see them recover quite nicely. You're simply and clumsily cobbling together a series of assumptions in an attempt to undermine Sidious's victory as circumstantial in defiance of authorial commentary that explains Sidious's victory was the result of vastly superior power, skill and expertise. He's better than the brothers, Arhael, together and separate. And by a lot. Filoni has said so exhaustively. Any insinuations to the contrary will be disregarded without comment. It's been a year; if you can't process black-and-white now, you never will.
Equally you have no proof that attack was expected. In particular we can see that Sidious turns away and Maul looks at him with confused face: "Master?"
Equally you have no proof that these two particularly durable Force users as you say weren't damaged by the Force blast. Other characters like Kenobi were shown to get knocked down by Force blast alone. Brothers in comparison were blasted, suffered additional impact against window and were pressed hard against it. There was clear expression of pain on their faces. Yes, they recovered quickly, which is impressive but in no way it means they were undamaged by it. Second similar Force blast from Sidious completely knocked Maul down.
Accuse me of assumptions all you want, you equally assume here but with much more bias. Filoni's statements that they were no match for him does not prove that he could Force handle them at any moment of his choosing. You can't prove it no matter how you interpret things.
And I might be compelled to believe you, if the brothers were indeed known to have been caught off guard. Regardless, your argument topples: if Dooku didn't try to resist Sidious, it was because he knew it wouldn't do him any good because of Sidious's vastly superior power. And as to why "I conveniently ignore" cut content? Because it defies Filoni's commentary and, oh, it's cut content.
As you confirm, Dooku knew it wouldn't do him any good, thus didn't try. Reluctance of Dooku does not prove that Sidious can Force handle him during fight any moment he wants.
If you think otherwise, then both fights of Yoda and Dooku don't make sense. If Yoda - Sidious equal in power by all accounts could safely overpower Dooku with TK, that's exactly what he would do. He already showed it on Ventress, no reason for him not to try it on Dooku. The only logical conclusion is that Dooku would be able to resist.
Sidious is better than these guys, Arhael, and in the words of the Dark
That has absolutely nothing to do with my argument. It's not about whether he is better than them, he is undeniably better. However, you have no proof to claim that he can simply dispose of either of them during fight with Force like "fodder" as you say. There is no way 3 against 1, where one character could fight Yoda without being Force handle is waaayy too much.