My point, if a Laptop is all your used to then great, but if you have gamed on a proper machine, you do not know what you are missing out on.
What is a "proper machine" exactly? Isn't it true that your gaming machine could be considered "crap" by some gamers?
Bottom line: there is no "Minimum Specification" for a "gaming machine." A gaming machine is a machine you can play games on. There will always be bigger/faster/better machines than the one you game on. Always.
That said: do Macs tend to fare poorly in this area compared to the average competition? Sure. Why Apple is always behind in the GPU department is a mystery that continues to baffle.