For me, Uada and Mgla don't really sound the same at all. Exercises in Futility and Devoid of Light may cross paths, but older Mgla is slower paced and I feel like Exercises flows in and out of mid and fast tempo where Devoid is more of an onslaught. When I put Mgla in, it's more relaxing where when I hit play on Uada I'm banging my head and ready to thrash. Uada just feels angrier.
To me, this new Uada feels like an evolution from their debut. When I heard the first single, I was a bit disappointed because it did sound like Devoid of Light leftovers at first, but as a whole, this new album feels more refined with nods back to Devoid but still feeling fresh. I'd almost go as far as saying this and Devoid would work well as a double lp.
I'm new to Dissection so it's not engrained in my head yet, but Somberlain is a killer album. I need to give that a spin again to compare.