the ps2 IS the most powerfull.
however it IS the hardest to program.
just look at games like ghosthunter, primal, gt4, god of war, devil may cry 1 and 3... there are heaps of polished games.
what game has the best graphs on the xbox?
i dont know but i seen halo 1 and 2 and, to be frank, it looks like ps1 graphics.