Reasonable on 10 August 2011
I suspect this is more down to the mega-texture approach in ID5 tech than anything specific about PS3/360 not being good enough. TBH so far as I understand the mega-texture I'd assume that even on a PS4/720 you'd either need to fully install or play from the disk only.
The install is optional so it's not like you need to do it... although I get a feeling it might be more noticeable than with most titles if you don't.
Try to be reasonable... its easier than you think...
