The 100 deathmatch event and its exploiters

So there were two accounts with less kills than matches in that event, and they qualified for the top 300 free premium plane prize.

One of them scored only 8 kills in 84 matches, "improving" to 60 kills in 325 matches and later 257 kills in 355 matches.

You could "achieve" these stats (60/325) by having nothing but a bomber in your deck, then joining the queue and not doing anything else. The server would force-spawn you with the plane after a while in the match, the gunners would rarely kill some red plane and since you'd be force-spawned several times per match and fly straight forward to the reds, you'd end up having a kill once in a while.

So I suspect these accounts were rewarded for what was mostly or exclusively bot activity. I reported it in the forum and next time I went there to look for replies the topic was deleted, with no pm in my account.

This is some serious nonsense, but somewhat representative of Gaijin's design of competitions and events.

Do you remember the torpedo bomber event which allowed Beaufighters and B7A2s in? OF COURSE players used them to slaughter the Beauforts, Il-4s, Wellingtons and TBFs! Gaijin later removed the Beaufighters, but never removed the B7A2s. 

Gaijin is great at 3D models, fine at textures design and the ingame voice chat works surprisingly well, but they fail in too many things involving a requirement for logical thinking or anticipation of exploitative player behaviour.