The argument that he was using the CPU as his compatibility test only for the Samsung 460 patent is flawed because the 460 patent makes no claim to CPU architecture required to execute the function.You are assuming that the AHA moment is specifically about the CPU compatibility. There is no reason to assume that. The processor compatibility statement was made in response to a question about their "initial stalemate" which the foreman replied "was about a particular, ah, patent, ah, the '460 patent."
The function in question in the 460 patent... "method of transmitting emails, with and without embedded images, from mobile phone with built-in camera.", describes a function performed on a phone.
Both Samsung's and Apple's phones use ARM based CPU's, so again, his argument is incorrect.