Betting you are 550 light. With the recent change they made to boost lower light scores, they messed it up for 550 people. In the change they listed that for those under 550 the endgame score would not match what gets applied to CtA because they apply a multiplier to it which makes it higher in CtA scoring. Well, a bug was found the 550 light gets a negative multiplier making the score slightly less than what the end match score screen shows. So, at 550 you are now at a disadvantage.