I've got my 360 and ps3 hooked up to my 1080 display and yup, I still stand by what I said.  Forza 4 looks better than GT 6.  But that's just me.  Everyone's got their own opinion, so I won't dwell on that any longer.  

Again, sales don't support what you are trying to say. What will?

A racer on last gen hardware made you appreciate the graphics of a racer on current gen? Would not have expected that. Should be interesting to see how Polyphony's first outing on PS4 should compare to it, or even DriveClub when it launches early next year.

WOw a modern console game slightly better graphics than a game running on 8 year old hardware? Am i suppose to be surprised?

But Forza 4 has 60fps without frame drops, this doesn't apply to GT6...

That's an opinion and a preferences.  Forza has more stylized/unrealistic graphics but it makes some things look better.   Gran turismo aim for more naturalitic looks and lighting and not high stylized, so some things might look more plain compared to a game with more stylized graphics.  It is what it is, and it's a matter of preferences.

Both games in motion, I can barely see a difference to be honest.

Ehm, no. One can easily make a "prettier" game or better looking game if you don't have to worry about fps.

Forza 4 to 5 there is a big jump after playing 5 atleast in graphics.

Is this supposed to be surprising?