Lets say you bought all the PTS (assume cost = market cap) and then put them on bter, then you'd get half of market cap of BTSX + PTS market cap at sell. BTSX market cap is currently 36000 on bter, so unless you bought PTS at market cap >= 36000 BTC/2 + PTS market cap at sell, you're doing just fine.
Edit: Corrected.