I have an Incredible and an EVO...Seriously, the EVO feels like an Adult phone, and the Incredible feels like a kids phone...SIZE WISE! However the incredible is light years faster and snappier, without a doubt. There not close in size at all, and the Droid X is even larger then the EVO. It looks mammoth in the Engadget video! Also thumbs down to Motorola for putting such a LARGE bezel on it, and adding that mirror finish to it as well. It does look thin, but a tad too wide to handle one handed. The verdict will come when it gets released. I happen to love sense, I just wish HTC's build quality was as good as Motorola's.
I held my incredible next to an EVO and the EVO wasnt that much bigger so not quite sure where you say the EVO is so much bigger then the incredible

(I don't care about the sunshine issue because as soon as you put the Incredible in your shadow, it's comparable to a TFT's visibility)
Kind of ridiculous I know, but I don't really plan on using it too much anyways. Novelty~