I didn't think I was that old (49) and I don't have cataracts as some have suggested all who play PG must have, but I don't really understand the comments I've read that PG graphics are dated and need updating and the lighting needs work compared to TGC. Obviously the PG graphic are not perfect; but like DoGgz mentioned, I thought that TGC looks a bit too "perfectly plastic" - not especially bad or especially good and my preference is PG, to be honest.
The TGC2 trailer looks OK, but apart from the avatars, it doesn't look much different from TGC1 to me (and I understand the quick glimpses and transitions shown may not accurately represent the visuals while in an actual game). I think I'll proceed as I did for TGC1 - let a few months pass and read/listen to what others indicate before making a decision on purchasing the game. The societies and build your career/wealth to play in bigger/better events or societies is not something that interests me in a game, so I'm less interested in TGC2 than before the trailer came out!
Back to the visuals, PG definitely appears much more like Links than it does TW. This is probably why I prefer the look of PG to TGC, since I always preferred the look of Links over TW/PGA. I've often pondered if those indicating the graphics/lighting in PG need updating preferred the look of TW over Links - that is my belief, admittedly without any basis. Or is it that the console players wish to have things look like they do on a console. I don't own a console, but from what I've seen, I've always felt they didn't look as good as the PC versions/games. Many of the PG screen shots seem to have the brightness much, much higher than the default values. I know it's all personal preference, but I've never felt the need to adjust the lighting in the game (or maybe do I have cataracts!?!).
I didn't play very much TGC at all, but like JNPG, I immediately turned all the aids off and set the difficulty of the driver swing to max, etc. laying with RTS, I never found the TGC swing that easy and that repetitive (although it is much easier to me than the RTS in JNPG!). I don't think I ever broke 80 or perhaps even 90. I tired of the same conditions on the course each time I played it. I'll keep on my on TGC2, but I won't be obtaining the gold drivers and throw-back outfits that the pre-order folks will get.