I main a titan. I kill Sunbreakers all the time. I get killed all the time when I use it. It's fine as is. Nerfing it will ruin it in PvE. PvPer's are crying because they aren't used to Titans being formidable. Is it an "easymode"? Yes, in a way it is. What it is not however is overpowered. The good players find a way to shut them down. The ones who think they're good come here to cry to Bungie to kiss their booboo's and make the hurt stop.