First of all, we don't get unlimited hammers. Each hammer we throw takes a chunk out of the super meter like using razors edge does as a bladedancer. Second, nobody is using other subclasses because we've been playing with those for a year and sunbreaker is new and fun as shit. And third, all of the useful abilities a sunbreaker has revolve around the super. hunters have things like blink strike and smoke and blink and shadestep and keen scout and quickdraw. Warlocks have things like blink and super long range melees that steal health or give you a shield on hit, and double grenades and tracking grenades and grenades that burn for ages. Titans have... Mediocre grenades and t-Rex are melees? When you don't have your super as a sunbreaker, the subclass is just meh. The subclass is based around the super so our super [i]should[/i] be better.