The E for All builds played almost exactly like Brawl, everyone who played them claimed that Brawl would be different from Melee but still competitive, and people believed that tripping, aerials cancelling out of fast fall and airdodging out of attacks were new techs because of mass hype.
Want proof? Watch the E for All matches. No hitstun, floatiness, slowness and no techniques,
What we are seeing with the demos here is the game we're gonna get. But that's not a bad thing, SSB Wii U looks already better than Brawl in the demos at least.
Unless if Sakurai implemented critical attacks or random knockback on moves. In that case SSB 4 = Straight into the trash