Soo... 3.5 years? According to your logic then PLD has been top dog for even longer. Ignore ARR when you only have 2 options for two slots lets focus the argument on when they had competition.
HW? Yeah WAR was always played. SB? Beginning first 6 months until Sigma it was kinda split between DRK/WAR then WAR stayed top after the change. I mean why isn't DRK/GNB the top dogs and PLD at the bottom? See the slippery slope of "well WAR doesn't need to be the king all the time". No it doesn't but that doesn't mean it should be the worst either. Healthy discussion on small changes to WAR until 6.0 where they will likely give WAR a full rework (cause if they don't I'll go into a comma playing WAR)