But regardless of those details, what I am 100% absolutely certain of is that the nerfs to Armor and Control AND ED (which should be considered to stand NOT for "Enhancement Diversification" but instead should be thought of as "Enhancement Diminishing Returns") were very necessary, were done exactly right, and have resulted in a long and bright future for the game. The people who left at that time just were not forward thinking enough to see what was possible down the line.
ED saved the game.
And Fire Tanks are still, of course, kings of damage among tanks.