It's weird. Jeff (giant bomb) and Peter (gamespot) also said the visuals weren't good compared to Forza, and I was like... ummmm....
I think it falls down to personal preference, they may be more wowed by forza's more stylized visual aspects. Like that Dubai track for instance is for sure a looker, and the HDR allows them to amp up that style even further, whereas GT Sports' visuals and HDR is more aimed at delivering a more realistic experience, and real life can sometimes be bland.
Edit: Also, people defending the 3 tracks per week for dailies now... Jesus.
Also offering lobbies up as an alternative to dailies, I don't even have the game and I know that's not a viable alternative for dailies (unless you have a shitload of time) from reading the OT and the reports of the lobbies taking forever to fill up, and hosts randomly dropping out. Not to mention not being able to improve your SR/ranking.