Why would people throw a match? Well how about trying to get it through the thick heads of the players, LOSING THE GAME, that they can't win it, regardless?
I asked continually to throw a match. It was the rescue Shae mission (sorry I can't remember what it's called 'In Shock' maybe?). I'm a Tier 1, Rank 3 player, in a team of complete beginners, something like 2 rank 6's and no rank. We were up against a very good, Tier 1, rank 1, Ayana who was wrecking them with her super. The shuttle had already had to go back to get more Aleph and they'd only managed to take out two/three tentacles. We still had the moving Hydra, to deal with and of course Kuzman. There was no way we were going to survive that mission. I was, but they weren't and there was no way I was going to be able to take out the tentacles on my own, before the Antagonist had wiped the floor clean with suicidal, headless-chicken, team mates.
Then there's also the situation where you've got a 999 red bar rating, server connection. You know the one, watching team mates walk off the edge of a platform across and invisible bridge? And then of course taking 5 seconds to throw a punch.
I get it that people are probably playing for a BP and even worse, second and last chance playing for the BP in the pot award chance, but still, when a game's already lost/terrible connection, there's no point in continuing. This is something that MS have to sort out. Before the horrendous July 2nd update and its successor, blueprints stayed until you won them. Now, not only are you getting one BP opportunity a day, compared to at least 4 and a rare, there's a high chance of losing it completely.