For the divine classes, they are likely to feel somewhat weak offensively, Druid is probably the exception to this.
Favored soul with charisma/wisdom to attack and damage, big pool of sp (plus temp sp per spell critical what happens often with aoe), spells with light damage that very few enemies resist (some in spellcasting tree to use with metamagic for free), some cc, good heals, many buffs, full saves - is weak?
Pure druid has no access to wisdom for attack and damage (except flame blade that often fails due to fire damage that many enemies resist or even have immunity), less sp (on level 3 can get temp sp in animal form per critical hit from Essence Of The Shrike, wolf companion attacks also count), slightly weaker heals, 7x SLA (require multiple spell powers and maxed lower SLA even if not used, 2x aoe).
Pure cleric seems weaker than favored soul (less sp, no temp sp, no access to wisdom for attack and damage, less deity bonuses), but has access to nice domains with 3x SLA (for total 4x single and 2x aoe to use with metamagic for free) and various bonuses.
Stormsinger has limited pool of sp (later on level 12 can regenerate with Spell Song Vigor, but it requires T5 in spellsinger instead of stormsinger), good cc, many buffs, weaker heals, 6x SLA (2x aoe) and sadly no Swashbuckling tree (on level 3, +1 critical threat and multiplier with light/thrown weapons and charisma for damage).