Wrong stats: witchmen of Hyperborea?


In the progression table in S&P #8 there are two things I'm not sure of:

1. Their BAB is

lvl 1 +1
lvl 2 +2
lvl 3 +3
lvl 4 +3
lvl 5 +5

Should lvl 4 not better be: +4?

2. Their Magic Attack Bonus is on lvl 15 already +11, although they are described as a hybrid of wizards and fighters and the "pure and wizardly" scholar from the core rulebook reaches only MAB +10 at lvl 20.

Is there a misprint in the witchmen progression table?