I am inclined to agree.
I think the problem, however, is the graphics driver. Compared to the d525 box playing the same mp4's the cpu usage is much lower, the jerkiness (dropped frames) is much higher. Neither are perfect compared to, say an i5-2510M, but I would have expected the D2550 to be able to play mp4's at 720p without any difficulty.
Still, there is one thing it does better. One of my test flash samples works on the d2550, on the amd t-56n, it just melts the cpu and does nothing.
Dear Intel, please fix your graphics driver because I really want to be able to buy a couple of hundred of these...