I've still yet to play that one. Is it worth going back to for someone who didn't like the wii version?
Absolutely , they are different games altogether that only shares the name and some "zones" and general story, i played them both and 360/ps3 is the superior version easily.
While some argue that "at least ps2/wii version didn't have medals collecting/hub worlds/plane levels" i would say that they don't really affect the game that much, in fact it enhances it over the point and click "hubs" in ps2 version, you feel like you are in a journey around the world with living towns.
Also no wii controls is a plus already, and werehog levels can actually be enjoyable if you get all his abilities unlike the complete turd of wii/ps2 version -remembers the bees and shudders- they should just be shorter levels and get rid of the awful battle theme that stuck on my head as i type this and i already regret talking about it.
i would do anything to get a game like Unleashed again, what a special game, flaws and all.