Assumptions of 2-bond hedge: 4 or 5?

CFA Level III
#1

Schweser gives 5, while CFAI gives 4?

#2

There are several differences like this between Schweser and CFAI… I am sticking to CFAI.

#3

Another is that Schweser includes self attribution bias as a separate emotional bias resulting in 7, while CFAI doesnt and has 6. CFAI includes self attribution in overconfidence.

#4

SCH 4&5 are same…