Farflame Mage has 2 different types of range in offense and defense

I noticed that my Pyromancer with Farflame Mage boost has 8.69 range in offense but in the Castle Guard it has 7.45 range.

Is it normal that the defensive Farflame range has less range than the offensive one?

My Farflame Mage has only 6.50 Range, why is that? 

that’s because of the forgings 

*noob* lol