I know it's not scientific or necessarily objective, one of the main reasons I picked the Rezound was that it "felt just right". Ever since the first time I heard about the Bionic, I knew I had to get it, that is until it finally came out and I tried it. Then, I thought maybe the Razr, but once again, ehhhh it was "Ok". Then I wanted the GNex, but it just didn't "do it for me". I wanted to be "blown away, like WOOOWWWW!!!" like I was when I first saw and played with the OG Droid.
The Rezound did that for me. Smooth operation as I navigated through it, beautiful screen, perfect size, shape, and top-end specs. Throw in the $200 I paid (Razr and Gnex were $300), beats (with earbuds), I knew I had to have it.
The Gnex felt boring and empty to me, lacking character and soul. I thought "it's awesome if you immediately root and ROM it, but not for me", and sure enough a friend of mine did just that, within hours, and loves it very much!