Do you mean my system is capable of FPS of 15-16 in such a game.. This is not Crysis or Metro33. Even these games do not make such a mockery of a such a PC at a resolution of atleast 1024X768.....!!!
They are saying the game may be buggy and not optimized to work on PC's. I've run into games like this before. The dev's sometimes aren't given the time and money to port a game over and they just release it, knowing there is a problem.
However, there is a chance that there are patches available or on the way. I've seen games that were released in horrible condition, with terrible lagging, but were done so due to running out of money. After selling a few copies, they get enough money to fix the game through patches. I've seen others fixed by 3rd party gamers (Gothic 3, which years latter still has bad lag issues on the top of the line systems of today).