I think the general intention of this thread was sound (and was actually something I hadn't really considered previously). I think the perception of Sonic and Mario being in a similar tier of platform games in the past causes many people to see more recent Sonic games as being a lot worse comparatively than they are, and that there's actually not many games within their realm that actually do 3D platforming a lot better (hell, I'd even argue the 2D games had far more competition than the decent 3D entries do). However OP kinda screwed up by asking for three games rather that 3 series/IPs (I know plenty of posts have gone with this anyway). This is mostly because if someone likes Crash Bandicoot better than 3D Sonic, then it's almost guaranteed that they'd like all three original Crash games better. It would like asking for 3 better 2D platformers than the Genesis games, and getting back three Donkey Kong Countries as a reply.
OP also shouldn't have listed Unleashed... because holy shit, those Werehog stages. It wouldn't matter if every other stage in that game was a "best-of" of Mario Galaxy levels the Werehog stuff would override it.
I am quite puzzled at quite a few of the responses in this thread so far though. There have been a lot of games mentioned that whilst I think are great, really don't make sense as nominations of being a better platformer than Sonic. I mean, Crackdown? How many times has platforming really had any consequence in Crackdown? You can land anywhere on basically anything and it doesn' t ever matter unless you just want an orb, and even that will wait there forever for you (nobody's said anything about Crackdown 2, lol). I'm surprised I haven't seen Half-Life mentioned yet. It'd be like claiming Portal is a better First-Person Shooter than Quake 3.
Also, I like the old Tomb Raider games... but they're pretty poor at being platformers imo. Any control issues you'd level at even Sonic Adventure games is a million times worse in classic Tomb Raiders.
No, because you clearly don't know how to play the game if a half-pipe gives you trouble. JSR is a hard game to get into, but that doesn't mean the physics and controls suck, proper positioning and speed are key as they're very much momentum based games, or in other words, much better at being Sonic games than any of the Sonic games you mentioned (well, I haven't played Generations and Colors has some good levels in there).
Was totally with you up until the underlined. That's nonsense, and a Sonic game that felt like Jet Set Radio would be a disaster.
The Crash games are still the epitome of what I think a 3D Sonic should be, which is ironic and laughable in a way b/c they were designed as a "Sonic killer", and more or less succeeded. The best examples of a 3D Sonic game aren't even in a 3D Sonic game! I can't really say that about Mario.
The Crash games are nothing like any iteration of Sonic should be in any form. It lacks
everything that makes a Sonic game. It has no momentum. It's has no tiered level design. It kills you with pretty much every touch from every enemy. There's no real speed reward when you master stages. etc.
The Crash games are far closer to represent a 3D model of the original Super Mario Bros, than anything related to Sonic. If you think they the best examples of a 3D Sonic, then the chances are, then you simply don't want a 3D Sonic really.
Also, in regards to succeeding as a Sonic killer. Crash's years of relevance were over by the time Sonic had a single proper 3D iteration. Unless Sony buys the Crash IP, the series can't even dream of having a Colors or Generations... or even a Lost World.