Re: AXS ratings
AXS isn't metered by Nielsen but the last time NJPW's ratings were announced (I believe in a press release the last time the show was renewed) they were around 225,000 viewers per episode on average.
MLW Fusion gets under 10,000 on BeIn Sports plus their Fite and Youtube numbers.
ROH gets a lot of viewers (350,000 households not counting online viewers per episode was the last number Meltzer reported a few years back) but because of their timeslot and channels in a lot of markets, many of the viewers are very old like WWE's.
Back when Lucha Underground was on they were usually lucky to break 100,000.
So given all this and AEW's current numbers I'd say 150,000 per week on the low end, 400,000 per week best case scenario.