I never played smash 4, that running animation was just too stupid, I play 64, Melee, and PM. But from what I have played and know, Ganon didn't fare so well in 4 (aside from rage). If you want me to elaberate more, then I will. Ganon is still very slow, his side-b has no reach, you can now mash out of it, back air is slow when it should be a easy walling option, and while I have been joking to people hear at college that nearly everyone can recover off stage, Ganon can't. Plus with rage being severely toned down in Ultimate, his best quality from 4 is gone.
But because I try to be involved with things that are unfamiliar to me, let me say what I do like. The sword is dope (although a bit slower it seems, comes with more range as a consolation I guess), the up-tilt time has been lowered (although I think it should be replaced with a faster stomp), his voice actor is awesome (It's the voice actor from melee reprising his role which is pretty cool), and his running animation isn't stupid looking anymore.
Listen, we all have specific reasons why we enjoy these games. I have been playing Ganon since melee came out. While he is isn't the best character, knowledge with the character still get him far. When I saw him and PM, he could also contend with the big boys. I can't say that about Ganon in the other games. Playing as Shantae and a decent Ganon were the only things I wanted from Smash 5. The only reason why I still am buying the game is because maybe at least 1 of those things happen. I know patches will come out as people play, but I'm worried he will get the same treatment as Jigglypuff got in smash 4. I want to like the game, so call my reasoning stupid, but all I want is Ganon to be good. (And our girl to come out. 30 empty character slots were found so here's hoping)