Reasonable on 02 September 2009
^^
Totally agree. I suspect for some developers the additional overhead for PS3 is above 10% (those pushing out their first PS3 title, or putting together a new engine like id) but for the big players, with engines already on both and relatively equal, I'd reckon 10% is about right.
For example, I'm expecting to see Batman sell very well on both HD consoles with a slight lead to 360 - no way would the developer want to lose approx 40% of potential sales.
Exclusives will be either first/second party, partly funded or the result of secure expectations - for example Epic can safely go exclusive on 360 or multiplatform if it suits.
Try to be reasonable... its easier than you think...
