Uneven Coin Distribution for Musk Ox?

[Unrealisation]

So, my friend and I were in this COOP room in Wild Tundra. Both of us are level 50s; he's a 12k and I'm a 6k. We each killed a level 99 regular ox (the blue one) alone. I received about 4k and he received 2k coins. Both of us don't have VIP/Premium. We were both questioning why he didn't get the same amount as I did--I mean, if you kill them alone you should get the same amount of coins as another person would if they kill it themselves, given that both oxen are the same level and hp, right?

With this in mind, we tested on a few more oxen and got the same result: he gets 2K coins for one regular ox and I get 4K coins for one regular ox. We tried it on other animals: eagles, ravens, walruses...we get the same or about the same amount of coins for those animals.

I'm curious as to why we don't get the same amount of coins for oxen. Penny for your thoughts, anyone?

[White Fang 1]

The more attributes you get the harder it will be to earn xp and points.

[Unrealisation]

That's a bit strange, but thank you for your input

[White Fang 1]

No problem.