NONO.
I agree with your comment, but maybe i was misundaztood.
What i tried to explain is that ace finisher comes because of the height opponent has when he is hit by wire attack

+b, (rising opponent is something essential ALSO, but i didnt really talked anything on this).
If opponent has a high enough height after wire attack

+b, AND u immediately input

+E/qcb+E, it automatically HAS to become an ace finisher (doesnt matter if u center the opponent with the ace or not).
on a side note: If opponent has way a higher position at the moment you are about to hit him with wire attack

+b, BUT u immediately input ace after it, opponent may not be centered (at this point, as u comment, it is already understood that opponent is still rising upforwards because of the wall bounce) and that´s why not all ace´s hits may combo, but u will still get the finisher.
i hope i explain myself enough...if not (or if i´m mistaken), no problem
PS:Although i still have to try different approaches on this, with Ace, hitting a wall bounced falling opponent (most CMV hace Ace finishers when Oswald is nearside a cornered opponent, and not with opponent falling side to side (wall bounced to the other side of the screen, falling) can also connect an ace finisher there also, i´ve done it like 2 or 3 times
But my comments are mainly practical for opponents just after wallbouncing