he's not saying its because of the level, hes saying it's because of the strike playlist given my drops in the tiger playlist I'm inclined to agree, I get quite a bit more frequent drops than I have from killing patrol enemies while farming mats and neither of us are saying to farm the mobs, you just kill everything you go past. I usually get 2-4 blue engram drops and then 1-2 more in end screen, per strike, without "farming" anything.