So if you go in two footed like Kompany did on Sunday, and win 100% of the ball and don't touch the player, why is that a red card?
Winning the ball does matter if you don't touch the player. IMO a two-footed high challenge which is timed perfectly and wins the ball while touching none of the player is fine, it's when it goes wrong that its a red card.
Because IT IS IN THE RULES OF THE GAME. A two footed, airborne tackle is a straight red no matter the outcome!