I just came back from a battle to check this so thanks a lot :-)

This is my first topic so go easy on me.I was playing a 60 mins island battle and i was using wasp so it would have been easy to be killed by a railgun but when i got shot by the side i still had a quarter of my life but when i was shot from the rear or front (i had full health) i would die in 1 shot and this happened a lot in the battle. So is this a glitch? Thanks for the feedback!