nah
despite it not selling as much in this specific period of time( I shouldn't have to explain). GT6 is still going to do 1 mill 1st week.
It will really be interesting when we compare Forza 5(Xbox One) to Gran Turismo 7(PS4)
but since GT7 is a bit away and GT6 just came out on last gen hardware, I guess we have no other choice but to compare the 2.