So having the longest range melee that gives you basically an over shield isn't OP..yes the Titan does the same thing but the range on it the shortest

Sunsingers feel like you're running underwater, their jump sucks and the grenade spam under radiance is easy to evade. The problem is when under radiance enemies run away and your too slow to catch them. Yes the melee is good and their grenades are good. Their mobility sucks, their jump sucks and most importantly radiance sucks in pvp. If you're lucky you'll get two kills while hunters get 3-4.

Wear praxis fire chest if you have and spam firebolt grenade with burn perk, reduced damage perk for radiance, and when verticality isn't a factor bunny hop with the jump that gives you a boost it is actually quite fast