UberMadman
Smash Lord
Sorry, I fell asleep after posting this. He's played with them both and he feels that both are viable but Bayo is more viable, though he thinks that both will need time to unleash their full potential. He thinks Corrin is better than Robin but worse than Ike viability wise.You can't post this without telling us what he actually said :V
Neither apparently have combo throws, but Corrin can kill with Up-Throw around 150+ like Marth/Roy and Bayo can kill with F-Throw at 150-ish at the ledge, (needs more testing.) Corrin's fair, bair, and nair autocancel from a shorthop, while everything Bayo does except dair can autocancel, though dair can actually kill with its landing hitbox. Corrin can also kill with bair and up-air, which are two of his better killing moves.
Corrin's Side-B is interesting, but you can't jab lock with it after you cancel it nor can you do anything immediately out of it, (even jump, which you have to wait for the full jump animation before you can do an aerial.) It can also stick into the side of the stage to act as a Wall Cling/Jump. Speaking of those, Bayonetta can to both naturally.
Bayo's smashes have some really weird properties too. They are massively powerful and big but apparently inflict limited shieldstun and trade with almost everything. He mentioned he got a Witch Time off on a Sheik nair and tried to Up-Smash her but the nair's still active hitbox traded with Bayo's Up-Smash. That said, apparently Bayo can easily kill at 70 if she gets a Witch Time off with her fully charged Smashes, (it lasts about 6 seconds or so,) and the F-Smash to Down-Smash spike seen in the trailer on Palutena is not only easy but practical. Oh, and Corrin's F-Smash and Down-Smash are good, but Up-Smash has a garbage hitbox that doesn't really hit to the sides.
Bayo's neutral-B is alright but Corrin's is legitimately good, somewhat. He didn't talk too much about Bullet Arts though.
Finally, he also says that he believes Umbra Clock Tower should be a counterpick.