Hard to say in Hoth's case, there's not much to go off of. He's the strongest member of a pretty pathetic army of Jedi, and that's basically it.
Kaan is actually really impressive as a telepath, but he doesn't seem to be much of a warrior; as I recall, the thought of fighting someone who could beat Kas'im left him terrified. Versus matches with him wouldn't be very interesting, because it'd basically boil down to one yes-or-no question: will his TP would work, or or will it not?
Farfalla is alright, I guess. His portrayal in RoT kind of reminds me of Meetra's portrayal in the Revan novel. I doubt he'd be up to par with members of the PT Jedi Council.
Well, they are not mooks.
The TOP 50 were strong:
A small collection of Sith Masters, Kaan standing at their head, waited to greet the reinforcements as they disembarked. They might have been only fifty in number, but each one of them was a Sith Lord: more powerful than an entire division of soldiers.
Taken from Darth Bane: Path of Destruction
Lord Kaan had impressive telepathic abilities on top.
Lord Kas'im was the finest swordsman of the era, and well-rounded. Probably the most capable combatant of the time.
Darth Bane even entertained the prospects of Lord Kas'im joining the Rule of Two but the latter was SOLD to the principles of Brotherhood.