Well, honestly, at this point, he's obviously just confused, and I'm trying to help him out.
MijRai, you do get it that it's a range right? 1/6 means min of 1, max of 2. Humans have the "average" of 1/6 in everything but edge, where they have 2/7 (which is more than everything else gets). Like, look at the table on pg 66, compare humans to everyone else.
So yes, you're right, 3 is the average score on the range of 1/6.......and 4 is the average on the range 2/7. You even get the free attribute point in that stat. So 2/7 is effectively +1 over the 1/6 range.
Please tell me you get this point.
Unless you're saying that with a 2/7 you still CAN have below average charisma.......and if so, why is that worth noting? You probably won't. The least charismatic hobgoblin is still more charismatic than the least charismatic human.