I bet its because your unfamiliar with the talent tree, I levelled as body guard and switched to arsenal at about 45, died about 4 times on the one quest (had died less than 10 times up until this point)mhad to spec back, i do my Illum daileys in bodyguard spec to and its fine for me, i have torian in pretty crap gear but you just cast fusion missle + explosive dart and death from above while torian jumps around punching peopls faces.... its fast for me you just have to learn how to play the talent tree first