I verified that I was on a ranked server, played 7 games...went up about 300 points, so I know it was ranked...well on the 8th game I was doing my best to get the basic explosive badge...so I played sniper and was droppings claymores in places that I normally go to... the tickets were at like 60 to 40, my team had advantage...BAM..I got that badge, happy happy...not right now! The next day, I checked BFHQ a few times cuz I know it takes some time to update and also here and I dont have the badge. WTF!!
hmmm... that has happened to me b4 with other badges and i had to re-earn them but b4 you go INSANE wait another day=)