XBLA would have easily been the definitive version had it seen an official release.
By the way, anyone who was a fan of Goldeneye/Perfect Dark should check out the Timesplitters series if you haven't already. It's basically a spiritual successor to them produced by the same key ex-Rare devs in the 2000s.
Contrary to what most people assume, the Gamecube was actually more powerful than the PS2 (the RE4 differences help illustrate this). The OG Xbox was overall the most powerful of that gen but even then the Gamecube had it beat in terms of memory speed iirc.