Played this scenario with my nephew last week. It turned into a bit of an artillery duel, despite the copious woods for the infantry to hide in. And, with three artillery units to their opponents' two, the advantage was with the Union. I did get some Confederate infantry past the end of the river to outflank the Union line, but Tom sprinted some troops across from the centre to get the final banner and win 6:3.
Swapping sides, the battle was again an artillery duel. Every time Confederate forces advanced, the Union artillery forced them back. The result was pretty one-sided. I had worked the one cavalry unit over to my right flank, hoping to get behind the Confederate line and mop up damaged units, but it wasn't necessary. A second Union victory, but by a bigger margin: 6:1, giving me the win on aggregate 9:7.