The OP is pretty spot-on from my experience. I think i was killed by tank mines as infantry more times yesterday than I've ever been killed, total, by them before. To the people saying that engineers won't throw them into groups of people for easy kills, i can assure you: they will. It happened all day yesterday, across many different battles and continents. I personally see no reason why tank mines should have infantry-lethal splash damage in the first place. They should destroy the thing that activated them, like a real AT mine. As if the explosive spam wasn't bad enough in this game already. My god.