Bonus Front Line XP - How to get?

[Beckett]

Wait, so losing is actually a faster way than winning if you want to lvl up fast?! o_O

Only kind of. Losing consistently gives more exp than winning every other match. If you get 2nd place eight matches in a row, you'll build up your EXP bonus and gain a decent amount. If you get 2nd place 3 matches in a row, then get one 1st place, then get three more 2nd places, you'll wind up with less EXP because that win in the middle reset your bonus chain.

Of course, getting 1st eight times will still net you more EXP than getting 2nd with the bonus would.