I think people need to wait before just looking at the hashrate of GPUs and jumping to conclusions. GPUs are reporting similar hashrates but are getting paid way less.
Edit: Someone on the discord said they were mining with a $4,500 rig using 1000W to make half as much BTM per day as a B3 running at 328W.
You only get paid for accepted shares...
While I don't have a GPU to check, I would assume this means their reject rates are much higher for whatever reason. You see people posting about the reported hashrate without taking into account how many shares are being rejected.