Problems with titles on cod mw2?

I was playing a team death match game and i called in a pavelow, my 10th, which should get you the "flying tank" title, it even told me i got the challenge. Shortly after i called it in and it gave me the extra experience boost for completing a challenge, a host migration took place, we were still able to finish the game, we won, which was my 5th team death match win, which gives you the "Team Player" title. At the game recap, it told me that I got the "Team Player" title, but not the "Flying Tank" title. I play on the PS3, can anybody tell me whats going on?