Reread the OP. What you're looking at is a string: AA. Has a start up at i13 and is two hits. Depending on when you stop the string (so you do either A or AA), the numbers are how far you went.....sooooo.
A = i13, -8 on block, +2 on hit
AA = i13, -5 on block, +6 on hit
so AA is better in all...