Yes, thats what I mean. I am sorry to disappoint you but there are some empirically attested principles to how the world works, and they are certainly not based on your fantasy.
Here are the facts: according on benchmarks, to play Tomb Raider on high settings and 1920x1080 resolution with good performance, you need a GeForce GTX 680 or better. Which is over 3 times faster than the AMD M370X. And that is on Windows, where graphics drivers are much better than on OS X. The M370X is ok, but its still a mid-range laptop graphics card — and not even the fastest one in class. So if you want that kind of performance, you certainly bought the wrong product. Which btw is completely your fault for making conclusions based on your fantasies.