Code:
Position  CountOfPosition  SumOfWinLoss 
SB             134            $10.89 
MP3             53            $4.34 
MP2            108            $4.29 
MP1            124            $2.21 
UTG+1           85            $2.04 
CO             122            $1.08 
BB             136            $-0.58 
UTG            113            $-0.97 
Button         134            $-13.81
The code BBCode tag rules.

And 1k hands is too small of a sample. One monster hit in the SB and one bad beat on the button could account for your discrepency.