The math itself seemed fairly similar. An important difference, though, is that you can use an on-screen calculator on the GRE but you have to do all calculations by hand on the PCAT. In that way, I thought the PCAT quantitative section was more challenging.
I guess it depends on how good you are at calculating quickly without the aid of a calculator. If you are rusty, it would help to drill the basics by hand... including log functions. For the GRE, I didn't really review at all and I did fine. I reviewed a lot more for the PCAT and got a slightly lower percentile on that that I did on the GRE.
I am not sure, but I would think studying materials specific to the PCAT may be slightly more beneficial than the GRE study materials, but the GRE stuff could still help.
