The only way to "amass" large amount of raid kills is to keep wiping. The overall kill count means nothing. If you think it does than either you carry your team or you get a killshot. Not many enemies in either raid you know....unless you wipe and have to start over (which looks to be in your case) 600 kills in a raid? Shouldn't be more than 100 honestly. Plus you don't have more raid kills than me. Look at your stats ffs lol geez. Ive got 13,000 on my warlock alone.