Well actual gain is less. I get 2k on vega but due to duplicate shares and other errors of the gpu miner I never go over 1.3k on pool side
I've not had great luck on VEGAs *at all* and mixed bag on other AMD with the current miners... so yah in that case not awesome.
My nVidia stuff is generally at ~85% or better or so on the pool-side -- so ~98.6% with the raw accepted figures.
CPU has the highest acceptance rate (99.8% on my Ryzen 1700X) -- and I do run a ton of those too.