I was hungover when doing the math. That probably why I fluffed it.
I also didn't compare Master of Light and Master of Alignment with Master of Fire that give additional +10 Max Caster Levels where some of the Divine spells have higher dice than Fireball and Scorch. Some of the extra max caster levels will most probably be unachievable to reach on Favored Soul with the feats and enhancements.
I have no issue with Divine spells getting a much needed buff, just concerned about balance as Sorcerer has no natural self healing when compared to Divines, Druids, Artificers, Alchemists and Pale Masters. If Savant isn't the top tier caster dps then what are they supposed to be? The only alternative is Eldritch Knight outside of Universal trees. With the exception of Alchemist that get evasion all others have medium to heavy armor proficiency. It seems like EK has caused issues due to 22+ points into EK for medium armor.
I do not and have never played a fire Savant. I was also an Air Savant on my Sorcerer. I was skeptical of Feydark Illusionist at first, but now like the tree. So will end up with no points in Savant and spend them in Illusionist as well as EK and other trees to max DC caster.
Edit: I should also mention that Favored Soul's also get higher DC's than Savant. Sorcerer get +2 Cha on Capstone and +1 Evocation tier 5. Favored Soul gets +4 Cha or Wis and +2 DC's Capstone, +1 DC's 5th core, and +1 DC's when below 60% hp as well as +1 Evocation tier 5. The Sacred bonus to DC's below 60% is redundant if they have Gloryborne Gloves unless it stacks. Though, Sorcerer has not had a pass yet and no new information on when this will be done outside of a post by Steelstar one and a half years ago.