Well to address your first point I'm inclined to take the statements of the novel that he's more powerful then he's ever been at any point as legitimate. Thus him not demonstrating the feats to prove this doesn't really matter.
Really? Why? It's not as if he's breaking through their armor if he's blowing them up. It seems to me he's simply expanding the air within their body until they explode. What evidence is there to suggest a lylek is armored internally as well as externally? Also you neglected to mention that he did not so much disintegrate a lylek as simply blow it up. An important distinction given the arguments about Starkiller's own similar feat in the trailer and how such would have taken much more power then simply blowing them up.
I assume that to mean he's like Yoda or Dooku in that his physical body was deteriorating but he could sustain himself and even make himself superior to what he was when in his prime as his connection to the Force grew. This is backed up by Zannah being shocked at Bane's speed wondering how it was possible for him to move so quickly hinting that he was even faster by Rule of Two. Strength matters little as he already has a feat on par or around Vader's own by ripping a durasteel door off its hinges in a weakened state.
Why is it better though? I'll admit I'm not the best person to judge speed feats but I'm curious as to why those feats would be better then Bane's own. Also don't we always go off the basis that beings around the same or similar power level have mostly equal speed? I know that's what I've always done to avoid complications.
Well if that was the case I wouldn't say Vader's suit makes him inferior. But given you have yet to prove that it gives him advantages in these areas by a significant margin...
A skyscraper? You mean the bones of a would be structure that has no supports or actual weight aside from its metal frame.
You keep harping on this point. I feel like the fundamental difference between us here is that I believe the text of a novel when it states that someone's more powerful then they've ever been before that point which it does in each novel of the Bane trilogy.
Given Bane was unable to do this I see no reason why Vader would be capable of such.
I didn't say it was though if Vader's tagged by it it could be debilitating. I'm simply saying you can't compare the two since they fall under two different power sets.
Why is that? I'm not saying they do or do not but how would you know the skill level of said characters? Skill like speed is another tough subject to analyze. Here we have Kas'im who has master all 7 form of lightsaber combat to their greatest extent and Bane after a few years training is able to stand toe to toe with him. Is this due to his superior power in the force? Probably, but then the same can be said about Vader's many victories as well. I WOULD say Kas'im is more technically skilled then all the opponents you mentioned but then you have to cross compare the different opponents and does Kas'im stack up to them as a pure combatant? Probably not. But then to ignore the decades of improvement Bane would have had and just hand wave it to the side seems a little ignorant tbh.
Also I'm sorry to say but Vader didn't beat Starkiller. I have the novel beside me now if you'd like to open up that can of worms. You should know as well as anyone that a voice actor's opinion is not equivalent to fact.
Vader outsparred Galen Marek before he defeated Shaak you know...
( Note: You might want to get your facts straight when bringing up TFU. I'm pretty much a fanboy of that franchise and will call our your BS if you don't have accurate information. )
Also as I said he did not defeat the Starkiller clone.
Ben Kenobi? Really? Old Ben had physically deteriorated rapidly and not sparred or fought with anyone for over a decade by the time he fought Vader.
And getting his guard broken through multiple times in that situation not to mention having his guard pierced by singular opponents in multiple instances.
I'd like some evidence for Vader having mastered all 7 forms.