To my knowledge and experience so far it appears that Aeons in general have a good sound for gaming even in competitive though they are a fantastic all rounder headphone with good vertical capabilities in their sound. However, GS-X Mini is quite the expensive amp I don’t think many gamers are willing to pay upwards of $1,700+ range for the amplifier. If anything your typical gamer would be more inclined to pay like maybe $100 less they were an audiophile and even then they’d likely stop at something like an RNHP, Liquid Plat, etc in the $400 range at maximum.
I Found the same factor in terms of the vericality coming into play upon plugging them into the Liquid platinum though perhaps not as accurate as your hearing. Though I do feel the aeons will lose out in terms of soundstage placement in larger fps such as Tarkov which is where headphones like the 1990 truely shine.
In terms of recommending the Aeons I would probably recommend someone the Open-X for first time user getting into the headphone as the open-x has more neutrality to it’s sound while having some brightness called Harman Curve V type of signature. The RT variations are tuned more towards the V signature with the RT open having more bass than open - x. Aeon 2 opens have even more neutrality and relaxing sound than the others so I am not sure if I can recommend them, again going off what people have said, though from the sounds of it Aeon 2 Closed is a damn monster for a closed back in terms of detail and resolution. However I will say that Aeon 2 Closed still has that bass presence unless you dial that in you could struggle in larger fps to face off against something as insanely accurate as a 1990.
I still love the headphone though. It’s easily one of my favorites and I feel it is so unique in tuning, design, and overall luxury comfort. I would have a hard time doing away with it. I play competitive with both my 1990 and Aeon Open X both are great but in the more expansive games like tarkov, arma, planetside, etc I felt the 1990 has quite the edge