Ugh, don't know how you can say that, game looks amazing, and much better than fallout 3 at that.
Well, graphics wise I can say that simply by stating a fact. Fallout 3 has higher quality graphics. You may like them more or less, but factually they're higher quality.
Personally though, I see Borderlands as stuck somewhere between the "realistic" look of Fallout, and a "wannabe" look that aims at something like TF2... And it manages to be neither.
Also, seeing gameplay videos where people take 10 million billion bullets before they die, the AI is stupider than moist shit, and "special" weapons seem more silly than interesting doesn't make it any more appealing.
Could be just a case of "horrible PR", and I'll want to take a look at it at some point, but currently Modern Warfare 2 seems more appealing.