hmmm
we found seelah, spec'd sword and board, perfect capable o' tanking most encounters up to hard difficulty. however, for a few boss fights, the paladin were not a viable tank... and the boss fights are kinda the chokepoint for those who might not wanna min-max. seelah, particularly if you made her a mounted combatant (we used wolf most often, but for full tanky seelah, boar is a decent choice... though admitted to do non-horse you gotta multi with oracle or something else,) is gonna be an excellent tank for +90% o' all wotr encounters on difficulties short o' unfair, but is not as if you are able to ignore boss battles which effective undermine her tank worthyness. so the question is why would you build seelah as a tank in the first place? crazycakes camellia is arguable the most effective pure tank 'mongst the companions as is typical better to use a dex build for ac than to try and stack armour bonuses.
y'know, the main reason we keep seelah sword and board in all our wotr runs is 'cause there is a holy avenger in the game and 'cause somebody in our party is gonna be equipping the undying love of the hopebringer. more freaking metagamey nonsense, eh? the shield is too useful for most o' our dc and fear-exploitation parties not to have the shield figure into our strategies, so somebody needs equip it and seelah is an obvious candidate.
in our estimation, your best wotr tank is a summons or an animal companion. sure, you may build an angel oracle to be nigh invulnerable, but why bother? build a party to max dc and damage output is typical our strategy 'cause an overwhelming offense in wotr is the best defense-- you don't need stellar ac if you kill everything in one or two rounds... which is admitted cheesy.
...
pathfinder is subject to munchkiny exploits, and owlcat took a hands-off approach to pathfinder balance... and then they added their own epic silliness which frequent complete breaks the game. this is a problem for casual gamers 'cause to make wotr challenging enough for a game with reload as well as hardcore fans who will make insane powerful trickster, demon and angle builds, owlcat resorted to bloat. well that is fine for the hardcore players who will grumble 'bout bloat as they roll-stomp through the game on any difficulty short o' unfair, but what about the casual player? wotr is designed so hardcore munchkins may nevertheless enjoy the game experience, but such design necessarily is gonna frustrate the casual and sane player who doesn't know every unique wotr exploit and stacking opportunity.
nevertheless, if @Gorthis having any difficulties with battles on normal difficulty, we will offer advice, but he should be reassured to hear playing every companion straight vanilla as offered is viable. it is 'course all too ez to choose wrong feats and multi-class options so as to make your party ineffectual. is also disturbing ez to build a party which is highly effective for the first 2/3 o' the game but useless near the end. regardless, is not too difficult to fix any "wrong" choices, so don't hesitate to express frustration and ask for solutions.
HA! Good Fun!