I don't think that's really an issue. Those large PS3 game sizes are caused by the lack of compression, right? So far I have yet to see any evidence that those PS3 games are better quality than 360 games, so I don't see the benefit.
Maybe the day will come where we will see a PS3 game that is impossible to port equally to the 360...but it sure hasn't happened yet.
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I don't think that's really an issue. Those large PS3 game sizes are caused by the lack of compression, right? So far I have yet to see any evidence that those PS3 games are better quality than 360 games, so I don't see the benefit.
Maybe the day will come where we will see a PS3 game that is impossible to port equally to the 360...but it sure hasn't happened yet.