2 hits and at lv1 Composee adds 413 Patk per hit. Meanwhile Thrust only adds 56 Patk. So yeah a Fencer with Sacrament will deal more damage with AA than Thrust.
@Baadaq: Yeah, with support. Fencers can act independent without support. As for why Doppel 3 is a disappointment to me, the reasons are fake multi hits skill, more debuff instead of buff and finally Redel and Zucken must be lv6 so attributes can be bought. Maybe more but I can’t remember right now