read the description mate.
It doesnt really care about cpu or gpu, but if you go over 100kh/s you get kicked out. it's a sort of a measure to level the playing field.
Ok, i have 1 MH GPU-Power, 1 use 10 Stratum Proxies (starting 10 batches, takes 30 secs), send my 1 Mh to 10 different accounts on the "CPU"-Only Pooly, get 10 x CPU-Reward.....stupid.