I do not know if this has been mentioned already, and there are too many pages for me to look through, but I think it would be a good idea to make a list for characters' survivability with perfect momentum cancelling. I know this would be difficult because it depends on what diection they are sent exactly, but an idea would be nice. For example, Sonic has great momentum cancelling horizontally(fair+sideB cancels virtually all horizontal momentum), which allows him to survive better horizontally than one might expect. Same with other characters which awesome momentum cancelling.
Hmmmmm, that would be a job for me
But making such a list would be very difficult, and subjective. A main problem is, do you want to pick some particular attack, and determine the highest % at which the characters can survive? That's extremely subjective, because two characters will have varying ranges of %s at which they will be better or worse. For vertical KOs and Link vs. G&W, Link will survive to higher % when close to the ceiling, but G&W will survive to higher % when far away. When you start considering crazy things like Yoshi using Uair > Jump > side-B (to avoid both killzones and allow room for the egg drop to recover to the stage)..... vs. some characters having discrepancies between their weights vs. their fastfall speed (I
think, and I don't know of any fallspeed vs. fastfall-speed comparison list)..... it gets tricky.
A better approach may be to pick a set number of knockback units to send the character, from a different (but standardized) set of trajectories/distances-to-killzone, and see how each of the characters' momentum-cancelling strategies help. This would be to eliminate weight from consideration, which makes better science, but distances our results from the usefulness of their interpretation; that is, our results wouldn't really reflect how things pan out in actual matches, where character weight
does matter.
So like... iunno. The
easiest thing for me to do, would be to subjectively rank characters based on how well their momentum-cancelling options seem to help them out.
ex. G&W is amazing
DK and Yoshi are second, except they're pretty doomed afterwards
Pikachu, Yoshi, Sonic, Squirtle, Diddy all have really good momentum-cancellers
Fox, Falco are fastfallers with useful momentum-cancelling jumps
Bowser, Link survive ok from their weight/fastfall speed, and can jump to cancel a bit of horizontal knockback
ROB has no options at all (not even his jump helps, lol), but at least he's kinda heavy
Kirby and Jiggs are doomed
something like that?