Self Stat Buffs?

Something I noticed.

Fully buffed, my Vindicator gets +147 to Str, Con, and Dex, and +86 to Quickness and Acuity.

Whereas my Trickster only gets +114 to Str, Con, and Dex, and +57 to Quickness (and assuming 57 to acuity.)

I've checked over my Vindicator's items. There no stat buff in any of her items. So its not that.
I unequipped all of the items giving + to all skills, thinking maybe it was that. Nope.

Completely naked, my Vindicators buffs are much better than my Tricksters.

Looking at other characters, my Dragon Slayer's and Engineer's buffs are the same as my Tricksters, whereas my Reanimator's buffs are the same as my Vindicator's.

So I guess the question is: Are pure casters supposed to have better buffs than non pure-casters? Or is this a bug?

They should be the same since its the same spells. Cant explain why they would be different. :/