Reasonable on 11 September 2010
Unless there is some major surprise GT5 is almost sure to sell more. 360 has seen 2 full Halo FPS titles plus an RTS spinnoff vs one GT prologue on PS3. Both are typically huge sellers, but GT5 is almost certain to have more impact at this stage of the consoles lives and weighed against prior releases of the franchise so far this gen.
Try to be reasonable... its easier than you think...
