It’s fascinating studying all of the Generals in the East before Grant took command of all Union forces. They had overwhelming numbers and equipment, but were overly cautious, outmaneuvered, and outsmarted by Confederate Generals for the most part until Meade at Gettysburg. You are 100% correct that Grant would have thrown everything he had at Chancellorsville. Mary Lincoln called him a butcher, but he did what others before him refused to do to ultimately win the war.