Escalation/Conquest Challenges for OBJ Kills in one round - Too high

The escalation challenge requires 35 kills in an OBJ, the conquest requires 30. In both instances I've gotten to around 22-24 by playing recon and placing claymores every time I spawn and trying to stay in a central OBJ to get kills. I recognize that these should be a challenge but this is overkill. You basically need a match to last as long as possible, and hopefully your teammates aren't killing everyone before you. When I play I have 1-2 friends and we squad up. 

I think 25 kills would be a fair challenge for each.

I actually got the conquest one by playing in a closed conquest lobby with bots, but that seems to defeat the purpose of the true challenge imo.