I mean if you wanna compare it to a WWE period, you don't even have to go to "SD Six". AEW ain't touching WWE from 2012-2013 and I'm mainly talking about in ring action. People tend to forget those were all time great years for weekly episodic wrestling
. I guess a apt comparison is 2008 WWE which was also a pretty good year quality wise for the company.
Back to the topic, I can't speak on TNA -like I said, I practically watched like 1% of that promotion- but I think is kinda dumb to compare a 2 year company to a whole Era that lasted like 7 years.