Don't be ridiculous. If you are dying so much that they get so many supers in a Trials Run, then chances are they would have beaten you anyway. Golden Gun can wipe enemy teams, a single heavy ammo spawn can wipe enemy teams, a sexy nova bomb can wipe an enemy team and Warlocks have lightning for AoE murder AND the uber clutch that is self rez - not to mention Hunters having an entire spec built around neutralising supers! ALL classes are good and have powerful supers, if you fail to use them properly, then the fault isn't with others, it's with yourself.