Forza came to market in 2005.
Since being in the market, the last 11 or so years, no racing franchise has sold more games or has been as active in creating and releasing new games. As a result you can conclude that in terms of relevancy to the automotive market , Forza as a franchise has been more involved catering to the community, working with car manufacturers promoting new cars, etc..
So i would say their statement is not false or misleading given that context.
GT games may have sold more lifetime, but the bulk of GT sales have occurred during other eras long ago with no direct competitors as well. I particularly feel the way Polyphony pulled the servers on GT5 after selling 10M while you could still play Forza 2 , 3, 4 online...just speaks volumes in regards to consumer support.
Obviously a lot would change when the next GT drops and sells 10M off the bat.
PC I i7 3770K @4.5Ghz I 16GB 2400Mhz I GTX 980Ti FTW
Consoles I PS4 Pro I Xbox One S 2TB I Wii U I Xbox 360 S
