On what planet is Caenis a "conventional" servant?
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On what Planet is Caenis not a "conventional" Servant?
She isn't Heracles, hell Jason's rant against her explicitly has him declare she's literally not that much better than any Argonaut he's seen in why he was surprised she was so strong in Atlantis(and that was in the Sea by the by). It's even believed that Jason hurt her feelings there.
She isn't a Lostbelt Servant nor is she amped by any other BS powers, all she has is Poseidon's Spirit Core and his Trident and Armor but she has to go all out for those and she barely fought with either.
What she's capable of isn't out of parity with any other Mid-Tier going on High-Tier Servant, she just looks more impressive because we spent time seeing her be bullshit(No different than fighting Sigurd-Surtr who explicitly was limited and barely had a clue on how to use Sigurd properly).
It is funny though that now they are going to the Ninja Storm games now for Naruto which, let's be real, gets nutty real fast.