WWE the brand is still bigger than those two especially now that neither of them could go full time.
If they appeared on a consistent basis I could see TNA's ratings bumping up from 1.1's to maybe 1.7's... 2.0 on a GOOD week.
Minimal effect.
No one gets it apparently..it's not just Austin and Rock appearing that matters. If you have them come, you need to be proactive. Be ingenius. Them appearing and wrestling their talent means jack shyt 2012. It has to something new and innovative like when Hogan turned heel in 96 or Rock was on fire in 1998 and turned heel much to the crowds' shock...something else. Something bigger than the industry that would get ESPN and Access Hollywood alike talking about it....fans and McMahon have lost sight of that truth. Kind of got it back during the Trump fiasco but that was one deal.