Source: world-of-ru.livejournal.com/2449936.html

The point of the article linked above is that a player was complaining that the Sniper award he should have recieved. He wrote a support ticket and here’s what he got for answer:

“Currently there is a bug, in which ramming deprives the player of chance to recieve the award. The bug will be fixed in following patches.”
神炮手惊天大bug!: 又可以把淫家的神炮手撞掉了! 下个补丁修复!

So, there you have it, confirmed. Allegedly, this bug only occurs when ramming damage is dealt to friendlies, but this is not confirmed.