Have heal spells (Restore) always been int based?

[Ellyidol]

I just noticed this while playing around with an int bear, int provides more towards Restore than str does?

This was my Restore with 150 Base Str, 1 Int:



Restore with 7 Str, 144 Base Int:



I thought class skills were meant to be stat-driven by their primary attribute? Unless Restore is an exception? Any input on the bird's self-regen skill?

Thanks.