By CPAT do you mean Crack DAT PAT? If so, I thought on the real DAT the cube counting and hole punching were easier, the angles and keyhole were the same and the top front end and pattern folding were harder. Overall my scores averaged out to be similar to the real DAT.
I think some versions of the DAT have different sections of the PAT that are harder. And actually thinking back I did have some tricky TFE that I had to mark and come back to and stare at for a while. My pattern folding was definitely harder.
I thought the crack DAT PAT was similar to the actual PAT. The angle ranking for the actual DAT seemed easier (or maybe it was just my imagination) but the top, front, end and keyhole were harder. It's hard for me to really say because you don't get to see how you did on each portion of the actual PAT.