Franchise FC Hang on - maybe Chelsea did win the Champions League. John Terry did not deliberately kick the ball with his left foot just as he was trying to kick it with his right. It was clearly a mis-kick and therefore should have been retaken.
Nobody at all is saying it shouldn't have counted because it was a mis-kick, mainly because there's only only person here who seems to believe it was a mis-kick.
An equivalent would be a player repositioning the ball with his foot on the spot, and the referee deeming that was his penalty kick.