Originally Posted by
Aidoru
Note that damage reduction is not the same as defense up. Although I think they might work the same, not exactly sure how defense works. Not in terms of frames, they are literally different buff categories.
Andromeda's defense buff is listed as 20% defense, however defense works, and Joan is -40% damage reduction. In addition to that Joan has a -20% atk down debuff, which you could have used on Typhon before it used its overdrive. Amaterasu's defense buff is 30% defense according to the jp wiki and because they are separate category you could have stacked Amaterasu's defensive buff with Joan's defensive and atk down to mitigate even more damage from its raging overdrive. Though I'm sure one of the biggest factors for a dark teams against Ragnarok Typhon was the lack of HP eidolons. The fight itself was rather simple, just a build up burst, eat 2 regular overdrives, full burst at rage, mitigate a raging overdrive, push into stun, and pretty much win since she's had a very long stun phase, enough to recovery all skills, build up burst and even heal off of regen skills.
My weaker light team (SSR Raphael, SR Artemis, SR Belebog, SSR Amaterasu) has been able to clear all Advent Ragnaroks. No defender weapons and only 1 SSR weapon, rest SRs, so you can guess how low my HP is, the only bonus HP I can get is from relying on a friend with Hecatonchires. I did draw Metatron last week though so I'm not sure if she'll be making a big difference for future content.