He is ahead by +4%

Here is the Twodimes report
http://twodimes.net/h/?z=351716
pokenum -h kh 8d - as 2s -- 3s 5c 8s
Holdem Hi: 990 enumerated boards containing 8s 3s 5c
cards win %win lose %lose tie %tie EV
8d Kh 452 45.66 538 54.34 0 0.00 0.457
As 2s 538 54.34 452 45.66 0 0.00 0.543