Please check this score card!

[dogm45 10,593]

I just got out of this map. The reward didn't get distributed correctly?

[Whitee 193]

It is a glitch in the reward distribution system, it mainly happens after server updates, lets hope Tanki fixes it in the near future. 

[JL6H 1,220]

I never had glitch like that,however if it true i hope devs will deal with it as soon as possible.

[JonathanBernatowicz 119]

Actually, it's not a fact at all that those are the proportions given to others. The only one that's a fact is your own, that you did receive 485 crystals. I've been in many battles with my dad in the same room and my screen showed that I got xyz crystals amount and everybody else got 0 or something else, while his computer said something totally different in the same battle. So I don't think Active.Smile actually was robbed for 0, and it might've said you got 0 crystals on his screen. It's not a matter with the reward distributing system, but rather the visual end of the battle system.

[Ilia.ArchangeI 6,785]

Like Whitee said, it's a glitch.

 

The crystals are rewarded proportionally to position you hold on the score board, judging by your total score (in this case). If a player is positioned above you, they will always get more crystals (or the same amount, if their score is close).