"Wii U GPU is several generations ahead of current gen" Shin'en

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Michael-5 said:

Sonic Worlds looks noticably better then Sonic Generations...

I think the jump from Gamecube to Wii will be a bit smaller then the jump from PS3/360 to Wii U.

When Wii came out, it's best looking game was a Gamecube port (Zelda), and many games looked like N64 games (Red Steel). However not long down the road, Mario Kart Wii, Smash Bros, and Metroid Prime pushed the console a bit, and by the end games like Skyward Sword and XenoBlade really look much better then anything possible on the Gamecube. It's hard to accept, but if you actually played a gamecube game now, you would notice the difference.

Yeah, I'm replaying Twilight Princess now and while some of its effects still look great, the textures are very muddy.

The gap from Metroid Prime 2 to Prime 3 is a good indicator of the Gamecube-Wii divide; not a huge leap, but a noticeable step up in texture quality, scale, etc.