TL;DR: no buying recommendations are contained within this post.
Either the audiophiles aren't necessary for gaming audio quality or they are. It is that simple.
No, it's not that simple. You have an amount you wish to pay for an accessorized set of headphones with an integrated mic, for only slightly more than cheap decent headphones, with no mic, and no accessories. The ATs mentioned are pretty bare, still would leave you needing a mic, and would cost around double the products you're looking at. The question is how much does it make a difference for you, at any given cost. You're looking for value comparisons, but have personal considerations of value that may differ from others, to the point that it's difficult to comprehend.
I'm all for gaming audio quality, but I have no idea what it's like to put a price on it, and likely never will. One is a nice hobby, while
one is a reason for living. You will have trouble getting an acceptable answer
regarding value, if for just that difference in worldview. Then, that becomes even worse, for reviewing and comparing the products you are looking into, because with that kind of view, there's not much incentive to buy products made for gaming use, by companies that do not have directly comparable non-gaming audio products of known high quality.
They apparently are mainly good for music and things of the sort, things that I have no appreciation for in the least.
If you were broke (say, after the recession, unemployed longer than your benefits), would your heart skip a beat if you say an old import recording of thew New World Symphony you didn't have? Would you accept eating more oatmeal and ramen to have it? I do not use that as a hypothetical, but something that happened to me multiple times. Now, how am I, who has never
just listened for noises in games on different equipment, and prefers good music to substances I may or may not have tried in my younger days (though, music
in combination with... ), supposed to be able to say X is better than Y for that purpose, much less that it's worth some additional cost?
I think my AKG K271 mkII sound great in games, but I couldn't even begin to figure if they are better for games than something else, much less worth the cost of themselves and a decent amp. But, I'm listening to a live album of a band I recently discovered, and it's worth it ten times over the ability to get lost in it, while not bothering anyone else in the middle of the night, when I should really be asleep already.
Good headphones have better frequency response, and less non-FR distortions. In terms of what comes out the driver, audio quality is audio quality. Games do not have any special needs regarding headphone performance, compared to any other uses of headphones. They may benefit quite a bit from fake surround, like Dolby Headphone, or good integrated audio implementations in the game, but that will be similar across different headphones.