I dunno, it just depends on what you happen to have. For example, the debuffs are extremely good. So if you're running Cleanse (in Fire...?) or Debuff prevention (SR Amon), then you have zero risk for potentially amazing reward.
And if you're running Dispel (Mars), then the buffs can also be very good. +15 burst to all? Yes please!
So, overall, I'd rate Fortuna above-average pity SR. She fits well into those who got lucky with Mars, or those whose Fire teams are extremely bad. And that's more than what most pity SRs do! I didn't say the bar was high, now did I!It has Assault on it. That's plenty good.