If they were that worried about balance then it's insanely dumb not to have created the game with PVP stats in place. For instance PVP players shouldn't be able to dominate in PVE and Vice Versa. Solution = PVP stat called say Valor, Valor comes on all gear obtained in PVP and from PVP vendors. Gear with Valor has no light and does more damage to guardians, and reduces damage from Guardian sources. Example I have a 300 Attack Exotic Suros from PVE. You would have a exotic Suros that has a max of 200 Attack however it adds +10 Valor or what ever would make it equal to 300 damage to a guardian when stats are normalized. As for Armor as levels don't matter PVP gear would not have light levels. This would help with both reducing stat requirements for maximum results such as Strength, Discipline, and Intellect. Additionally It would have Valor which would make you take more reduced damage from PVE weapons so that the 300 attack woudln't be unfair in say Iron Banner. The end result is those who grind PVP only wouldn't be able to raid or nightfall just as easily as those focused on PVE, and those who do PVE couldn't come in and wipe there ass with PVP'ers in Iron Banner.

like i said many games launch with out pvp stats, and i dont want pvp stats, they add an unneeded separation. but adding a gun only available through pve that was dominate in pvp was the issue... all they had to do is make the mytho have all 3 elements on it and then you have a pve advantage with no pvp advantage...... IF they wanted to add a pvp stat for you gun example it would work like this, you would have a gun with 300 attack and no pvp stat, then you would have another pvp gun with the stat... the more stats you have the harder you hit guardians and the less you are hit for.... Top PVP gear will always be a decent gear for pve, and top pve gear will be a good start to pvp.

Not true, you can't take Arena gear and expect to go raiding in any MMO.