Got DW again, roflmao. Ive waited for that mission for days sometimes, and when i NEED Cortes, i don't get it.
Reason of triple viki is NOT to be faster with dps but more tankability. His dps is slow, compared to well-geared others, thats undenyable. BUT. Its very hard to debuff summons and stop them from hitting. Plus, if summon gets killed, nothing happens. You just resummon. With the right technique, you dont even get in danger of getting hit.
If your dps (and it doesnt matter if its L, Aclla, or some other random char) gets debuffed, lets say freeze, burn, stun... all the nasty sh*t, youre fcked. No dps -> no vampire -> have to pot. If you cant (freeze, stun, panic), its over. That doesnt happen with summons. Thats one of the few reasons of why i still use that team, despite all its flaws.
(maybe you feel the sig is cute. Most others will probably just blink and turn away cuz the blinking drives you crazy...)