Knowing what you own and how to communicate yourself accurately makes conversation a whole lot more constructive. I read just fine the problem is you don't communicate effectively.
It's nice that you can follow a guide online and build a new version of the Android OS, but that doesn't make you a hacker. It may make you a hack though.
Also, isn't your 7201 a multi core chipset? That might explain the performance capability. That said it's definitely not capable of proper full rate 720P MPEG2 sans GPU acceleration and the screens res would never let the video reach full rate anyway. MPEG2 is res dependant, unlike AVC and VC-1 ASP.