Legendary stats change
1. With the coming September Update tomorrow Anet will introduce the possibility for you to change the stats of your legendary everytime out of combat. So you can have all the stat combos in the game with your legendary.
2. Legendarys are only ment to be a cosmetic surplus to the game, so that you don’t need one to have the same stats. However since Anet will introduce Ascended Weapons in the September Update the damage and stats of the legendary weapons will increase to fit those new weapons. Legendarys will never be the best weapons but one of the best.