And no, Lee's losses at Gettysburg and Antietam did not amount to the nearly 70 thousand that Grant pissed away in the Overland Campaign.
Grant lost about 55,000 men in 6 weeks of almost continuous combat that comprised the Overland Campaign.
Lee lost as many men (about 35,000) in the Overland campaign as he did in the 4 days of battle that Antietam and Gettysburg comprised. Shovel up your on rational if you want. Bottom line. Grant won, Lee lost. In war, winning is the only thing that counts.
Lee's total losses in his losing effort were greater than Grant's war winning battles.
Grant imposed more casualties on his enemies than on his own forces, and as a percentage of his forces, Grant's losses were far less.
Presumably you'll want to challenge me to produce the numbers, and I can, but will have to wait for later, must go for now.