Ascended Vs Legendary
http://wiki.guildwars2.com/wiki/Greatsword_gallery
or
http://dulfy.net/2012/11/07/gw2-greatsword-skin-gallery/
There is no difference in stats between ascended or legendary. You should get the legendary just if you really like the skin.
[rT]
Stats are same, yes, but the one up that a legendary has is the ability to switch stats whenever (you’re not in combat). If you only ever want zerker stats, then it’s cheaper to just get the ascended gs.