That would make getting the achievement that requires 8 pretty tough.
And I don't think it's 4 str vs 50 res. If you give your minotaur +4 dex, he'll have two less dex than the lizard. Give them the same vitality (15), and the minotaur has 2 less dex, 1 less willpower, and
13-14 more strength (with skulls) vs 50 res.
I don't see the res as being
that big a deal. Your party is usually taking res damage as a whole, isn't it? Your barbarian would seem to need res the least, given the much larger HP pool.