Regarding the processor being older, I got this off of ppcgeeks a while ago but I forgot what thread and who I took it from:
""As to the processors, what we got is:
7200 (TyTN II, Touch Cruise, etc)
7200A (Daimond 2, TP 2, X1)
7201 (this one does not actually exist, I think)
7201A (Diamond, TP, HD)
Now,
AFAIK the only difference between the 0 and 1 variants is the Broadcom patent that has been worked around. Apparently this did degrade performance in certain specific areas, which is why the 0 variant has preference over the 1 variant, and the Broadcom vs Qualcomm fight has since ceased, so the 0 variant can be used again.
The A variants vs the non-A variants is the die-size. The A variants are 65nm and go to 528mhz, the non-A variants are 90nm and go to 400mhz.
7201A was produced before 7200A. So in fact, the TP2 has both the better and newer processor compared to TP "