Agreed. It's sorta funny. Many people (including myself) have made the mistake of buying a new and improved 1080p scaling DVD player so that we could get the best quality movies possible. All the while, not realizing that the HDTVs we were purchasing would HAVE to upscale natively, otherwise they would have a bunch of blank pixels. One could argue that the DVD player would be better at it, but by and large is not the case.
Anyway, it would be cool if HTC used the same drivers and such on the DInc as the EVO. That would at least address the software side of this quandary and would make some 'efficiency' sense for HTC.
Still, I'm not sure what HD video i would ever have on my phone. I guess 720p videos once we get the OTA and perhaps YouTube.