That's true. But the bottom line here is that even the best, most precisely configured laptop is going to have heat issues during extended gaming if it has high end graphics and you are playing demanding games, especially at high settings. This is a fact. You simply cannot provide sufficient cooling of the type that's necessary to cool high end hardware, in a chassis that's smaller than most phone books. The very likely result is almost always component damage due to thermal fatigue, or severe throttling. It may take some time for these effects to manifest themselves, but eventually, given circumstances that include trying to game as though you DID have a desktop with sufficient cooling, there WILL be issues at some point.
I have yet to see any of the high end "gaming" laptops, even considering they only used high end mobile GPUs, that didn't encounter these thermal issues when pushed under demanding loads for extended periods, as most all gamers do, so it's extremely unlikely even given the addition of a third fan that any laptop with a desktop GPU solution is going to remain thermally stable. Being proven wrong over the long term would be a welcome result, but I have serious doubts. Half the high end laptops out there can't even keep their CPUs cool, much less packing both high end CPU and GPU card considerations.