Like I said, DF has its uses, but SS is the clear winner in burst damage. It's not that DF can't burst. It is just not its primary purpose.
Agreed. DF/Lethality own high Defense/Shield reliant classes, including SS/MM Snipers. In close proximity, I will lose to an equally skilled DF and I know that. Conversely, an equally skilled DF will lose to me if I can keep them outside 10 meters. Interestingly, DF/Leth's need to get within 10 meters of their target is what makes them well suited to taking on melee types, however it did not fit my desired play style.
DF/Leth does do burst, but it takes a fair degree of front loading the target with DoTs. Once the target it DoT'd up, then yea...it bursts fairly well.