Like I said, if wide soundstage is important, these aren't the right cans. It's subjective like anything else.
I enjoy a wide soundstage as an aesthetic preference (especially for movies), but I don't find any actual benefit for gaming in terms of imaging or positioning that correlates to width of soundstage. If you check reddit, head-fi, or hifiguides, a lot of people think the 58x is not only good, but the actual best headphone for imaging and footstep positioning, even compared against things like HD800S, DT1990's, and other pricier cans. I don't really play online and FPS games aren't my focus, so i don't have any real stake here, but I do think they're fantastic for my purposes (mostly single player adventure games like Bloodborne, Hollow Knight, or Control).
Something else to keep in mind, and again this is just preference: Harman is way too bass-heavy for my tastes when gaming. It's a decent starting point for music (though the curve most folks use just reflects the fact that your average consumer likes boosted bass), but I find the booming low end mixes in a lot of modern games means you miss out on midrange and high end detail when you're EQing in a bunch of sub-bass to match Harman. All this to say, I prefer the 58x with EQ for music and without EQ for gaming.
Glad the AKG's work for you. They definitely excel at soundstage, and I know they're also quite popular for gaming. Different strokes!