Gibraltar is OP

I think there is two different subjects here, is Gibraltar OP? No. Is Gibraltar lethal in a 1 on 1? Yes. 

As above, in my eyes he is the least used Legend and the only time I see him I'm guessing someone is doing a challenge. Therefore he clearly isn't OP and as for 1 on 1 I've never been in this scenario because normally if you encounter a full team and see Gibraltar that's where you should all be aiming, such an easy knockdown due to the hitbox.