Talk:Artoria Pendragon (Alter)/@comment-60.51.43.1-20170918110213/@comment-104.32.101.200-20170920104739

They fill basically the same role. Both are Sabers with AoE Buster NPs and 2/3 of their skills are the same.

In terms of the power of a single NP, assuming the same skill/NP levels, Alter has a very slight edge due to her high multiplier and Charisma buff (though against Artoria enemies, Mordred obviously can blow her out of the water). However, Mordred is better at charging her NP due to having a charge skill and larger refund on her NP itself, and she has higher stats as befitting a 5*.