Well, I don't agree, so I guess I shouldn't be posting....
Thanks to EB, I've been able to playtest the three consoles regularly, sometimes with the same game. For this example, I'll use Nightfire because I spent plenty of time with all three versions. Gamecube and Xbox controllers being pretty much the same layout were excellent and the logical way to arrange things for those who've grown up on the WASD + mouse setup of PC games. PS2, is horrid. The lateral movement stick (the left one) does not fall naturally where one's hands would be, and the two sticks' close proximity to each other caused some brain-confusion. And having shoulder buttons instead of triggers (and two on each side on top of that) didn't feel at all natural. Err...hmm...didn't work Nightfire into it...
While we're complaining about controllers, I'd like to bitch about having to play 2D fighters on the DualShock2. I've been spending a lot of time with Guilty Gear XX and the damned 4-seperate-directional-buttons thing is a bitch when doing all those circle-based movements. Sure, you can use the stick, but it doesn't also control movement, just move-input.