#4 Spurs make better use of width by constantly switching play
If Arsenal were guilty of failing to use the width offered by a pitch such as Wembley, Spurs relished the space out on both flanks. It was one of the reasons why Bellerin and Nacho Monreal were barely involved in Gunners' attacks.
Since Bellerin had no cover (Ozil drifted in, remember?), Ben Davies was afforded a lot of space while Son kept Bellerin busy. That is exactly how the goal came about for Spurs.
Davies had all the time in the world to pick his cross and teed up Harry Kane for what was a fantastic header which would eventually be the winner. Arsenal simply failed to deal with the cross - first by allowing Davies to deliver the ball and then by allowing Kane to get the jump on Laurent Koscielny.
Spurs were also very effective in switching play between flanks. Whenever there was a hint of pressure, they would switch play to the opposite flank and relieve that pressure.
The home side also delivered better crosses into the box and, if not for their misses and Petr Cech's saves, the scoreline could have been far more embarrassing for the Gunners.