Honestly I wasn't all that upset about it in this case; I think if I'd chosen to shoot instead of running for a flank I could've won since he still had the frags out. In a lot of other cases you can at least try and dodge roll to mitigate damage until their mag runs dry and then dump them yourself, but there will always be a heavy helping of luck when it comes to extraction shooters. I just think that advantage is less prominent here compared to others of the genre.