Can someone give me an in-depth explanation why Summoner is arguably the worst DPS?

[Dwill]

Deal with it. People are getting real tired explaining the same thing to you over and over again. There is no big mmo out there that has a caster/ range outdamage melee dps anymore. So if you dont like being outdps'ed, then change your class to a melee.

Except you know, that's not true at all since the biggest MMO out there disagress with you. It just looks like someone doesn't want to lose their top spot even if they are not in more danger than their ranged counterpart just because of the class they decided to pick.

Edit: And actual data also proves that range can also perform just as well as melee nearly 50% of the time.