Guild Wars 2

Why are all Legendaries limited to just one set of stats? I’d like to work for something other than power/vitality/toughness. Both the Greatswords even have the same stats, and why do they get two when most other weapons only have one available, if any?

Transmutation stones.

If you’ve spent the time and effort required to acquire a legendary you most definately have enough gold to exchange for 200 gems (current exchange rate is 1s/3gems) to grab a pack of fine transmutation stones. Or you already have some from full zone exploration rewards.

Its the same reason the obscenely expensive cultural karma armors and the order vendor armors have fixed stats: because transmutations are cheap and the best stats in the game come from master crafted items so as not to make crafting a waste of time.