Khabib would be bigger fight night.
Styles make fights, but at this level, particularly theirs, every pound counts.
I don't think comparing opponents is clear; pretty sure Chandler would wreck most of Khabib's opponents.
I really don't see Khabib easily beating Chandler, but could negate him and Askren him I suppose.
Primus is no joke and needed those leg kicks to change the game, which Khabib doesn't have to that measure.
Another thing to take into account are Chandler's own words, "he's better than I thought he was", which shows he wasn't preparing for a 'world-beater'.
In that way, it's somewhat similar to Khabib/Iaquinta, in that Khabib probably would've disposed of Al quicker had he trained specifically for him.
There's infinitely more footage on Khabib for Chandler to study, and it would be infinitely more important a fight to win, clearly.
Same for Khabib, as Chandler has years of tape to study.
This is to say, whatever happens, I don't think it's a walk-through.
Chandler has shown time & again what he's made of.