How are both hooked up?
I haven't bothered using it to play DVD's only Blu-Ray discs. After seeing what a garbage job the PS2 did vs. a decent stand alone DVD player I wasn't expecting great things from the Ps3 as a BD player but have been very pleased.
Providing I have time later today I'll do a comparison w/ pics:
a.) Ps3 vs Sony upconverting DVD player vs x-360, media: DVD
b.) Ps3 vs Sony upconverting DVD player, media: Blu-Ray
I'll use transporter 2, as I own it on DVD and blu-ray
TV is Sony a2000 series SXRD
ps3 & Sony DVD, both over HDMI, 360 over component