That adjustment to -5 isn't crazy at all, as al explained, that's what your settings dictated.
But yes, a girl's team could've scored more.
On a semi-related note, I'm playing (not very well, but I'm playing) in a bball league. We have the championship game coming up, last night I dreamt that we lost the title game ... to a team of girls. In my dream I got there late and my buddy turned to me and said, "These girls are killing us!"
Good to know my subconscious is focused on the really important stuff.