i think speed all depends on the network we are connecting to as xbox live its not free so ms gives good service to ensure good online gaming as for psn its free so im sure their servers are always overcrowded dats why frequent disconnect happens.id prefer xbox live compared to psn.

4MB is more than possible. I have the lowest streamyx package still can play smoothly.

depends on area also imagine ur area is overcrowded with cyber cafe's then u will surely get slow connection.

im using 512kps , ......wonder suit or not for online multplayer for both console

if u live in secluded kampung with no network activity of course no prob...but even in populated area it is still possible

I like ps3