That was a fun experiment. If I get a chance, I'll record the test in high definition and post it on youtube.
I had my EVO, TP2, laptop (14", 1440x900) and HTPC (connected to 60" Sony 1080p LCD) playing the clip in sync. Without being overly critical and the reality that I did not gamma match or color correct all the displays, I'd simply say that there was very little difference (yes the TP2 looks as good as the EVO), they all looked very good.
One thing that did bother me a little was that my EVO paused (to buffer) three times for over a minute each time over 3G and the TP2 never paused. When connected to WIFI it had no problem.
I was VERY DISAPPOINTED when I connected the EVO to my tv with the HDMI cable, it is only 480p and did not come even close to the quality of the HTPC.