The difference is that Cech's foul wasn't violent conduct which in the scenario we saw today would have been the only way the ref could have let the goal stand and then sent the keeper off.
That job interview was going so well until I realized I was fukked up on acid in the middle of a cornfield naked and talking to a scarecrow.
Cech fouled Ade, advantage played and Bale scored. Ref should have sent Cech off. If it can be done in open play, why not in a penalty situation? 2 extremely major decisions that ruined a cup semi.