Really, drop off the GT vs. Forza. Enjoy the game (both if you have them).
My opinion: been haing a lot of fun with it. It's nice to anyone who liked the previous versions. However, I must say there's something different in comparison with what I felt when I started playing the previous versions of this IP. I remember that, at the time, everything looked new, magnificent, outstanding. Now, it simply goes like I felt after two months playing GT4... I can't feel novelty. This title shouldn't have take this long to arrive.