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