@ slowmo
Another thing regarding the Blu-Ray drive often brought forward by 360 fans in the past was data duplication in Oblivion, a game which looks much better on the PS3 (but 360's game of the year, the year before).
Data duplication makes much sense on Blu-Ray disc if you don't use the full capacity as it can reduce seektimes and thus enhances the overall user experience. 360 fans made a big deal of a tiny dev comment regarding this.
Data duplication on 360 discs make a lot less sense as you only have 6.8 GB of capacity to work with and data duplication thus reduces this capacity even further. 360 fans liked to ignore this comment:
"Bethesda's Pete Hines also commented that recent reports of data duplication on the PS3 Oblivion disc have been exaggerated, and this technique isn't different from the similar strategy that was employed in the creation of the Xbox 360 game last year."
http://www.gamespot.com/ps3/rpg/theelderscrollsivoblivion/news.html?sid=6165505&mode=previews
Actually data duplication is used a lot if a game has to span several discs, like is the case on the XBox 360 for larger games. This to reduce swap issues, so already used but again needed data for later parts of the game are duplicated to prevent users from constantly swapping discs.
So the discussion regarding PS3 Blu-Ray vs 360 DVD was not as black & white as you made it out to be, a lot of different topics regarding this were highlighted by 360 fans which required more in depth commentary.