Since it doesn't clear 100% of your health, I think it's alright. I mean, it is lame when you are in a match and get targeted by LB 4-5 times in a row(especially when you have no idea who it was aiming at in the cluster of people at Frontlines), but those are the rare exceptions I think. It has only happened to me a few times in my entire PvP career but I don't often see people complaining about in chat either either and it's normally one of those things even the quiet people are quick to comment on.