Considering Flash has more fights than Apoc's Team Win and the 2nd most fights overall of any stable, I'd say he's been around a looooong time.
A well run elite Tank can beat any theatrics 99% of the time aside from knockouts. Today, Seraph Zeta lost to a theatrics for the first time in a long time - by knockout. I know it's a controversial skill, but I run three theatrics - one speed, one whip entangle, and one net entangle - and none of them has beaten an elite tank in many seasons...and I've tried all sorts of things to boost their attack, armor penetration, endurance, bleed, etc... If knockout starts getting useful again, that will bring another potential shift to the meta-game along with the new shadows (btw, Zynaidh's loss to Seraph Zurell made me think shadows will have a tough time against hybrid wars and maybe even against the elite tank wars in blood gods)
And Kreegan is right that the tanks suppress everyone else except the 2H Ragers who manage to get out ahead of the speedsters in the rankings. Having theatrics find any level of success against those tanks will dramatically shift the meta-game.
For my part, I only started a tank because you need one for conquests. Wouldn't be sad to see tanks fall back to the pack.