The "General Games Chat" forum, which includes Retro Game Reviews, has been archived and is now read-only. You cannot post here or create a new thread or review on this forum.
But I think the Cube will just have the edge on the PS2 version.
I'd therefore suspect that the Cube version would be better, again for the quicker loading and slicker presentation.
If you're more careful with your money I'd give the PS2 version a good think.
It depends on whether you want a few extras or an overall more fluid and enjoyable gameplay experience.