No, he was probably one of the best commanders the US produced. He was however the victim of, as Grant described it, "earliness". The government and public simply didn't understand the nature of war, and expected a grand Waterloo style victory culminating in a march into Richmond. This was of course never achieved by anyone.
Essentially, the bar was set so high that no-one could reach it. He didn't reach that bar, and then nobody that followed him, Pope, Burnside, Meade or Grant, reached it either. If you read some of the diaries of Lincoln's cabinet members then even in 1864 they are expecting a Waterloo style victory, and are appalled with what Grant delivered.