Checked now many videos of wipes and kills, infact, the animation of the healthbar is the same, it goes to zero and has a little white glow while that. The same seeing in this video. So just by that you cant say you did it or not. By the amout of health left, i would say he wipe you. + normally even if you kill him in last second and he wipes all, you will respawn just so when he still dies (happened to me in other day ones aswell.) So no you dont deserve any emblem.