I hate to say it because it shouldn't need it, but using a VPN service will sort your problems out, the issue isn't in the mechanics of the battle mainly the lag that kills people. (Of course there are some people that are just bad regardless)
I hated Titan HM because on my screen I was clearly out of his plumes, landslide etc but always got hit! After countless threads and posts of people reporting herrendous lag in general there is still no response aknowledging this.
I have seen posts where the Devs confirm VPN service isn't against the ToS because it doesn't directly control the game client so try a free trial and see the difference.
I now love doing Titan HM because I can dodge almost everything without any lag problems.
I don't know if this works with PS3 users, I never use the PS3 because of how aweful it is in comparison! Bring on PS4! The other thing you could try (it may help) is use a ethernet cable to the PS3 as the wifi adapter on the PS3 is pretty shoddy.