I must confess also that I've played Pro since it was then known as ISS and this is the first year that I feel Fifa may have overtaken it. (Last year was marginal in my opinion).
I feel that Pro are trying to get too much into the graphics and are forgetting about the gameplay that once made them such great games, whereas Fifa has completely overhauled theirs in recent years and to be honest I find it to be better these days.
Just my two cents anyways.