At 2nd Bull Run, he only inflicted 2,000 more casualties on the Union than he received. Again, it was a brilliant strategic victory, but on the grand scale, the CSA were depleting their resources proportionately much faster than the Union were.
I don't see resources use/depletion as a tactical issue but a strategic one and a rather moot point overall since offensive campaigning in that period was likely to result in high casualty levels due to recent advances. Alternatives such as Johnson may have a better casualty ratio (or maybe not, haven't looked into it to be frank) but you then have to put up with a general who refuses to tell you what he's doing and gives up important defensive lines and cities, seemingly without rhyme or reason.
You pays your money and you takes your chances...
But again, most of his battles were defeats on a tactical scale due to the fact that he was expending his resources too fast. He was betting everything on the idea that the CSA would be recognized by the British and French, which came very close to working but was a too ambitious plan overall.
I don't think he bet everything on the Europeans at all. His invasions seem to aim more at influencing Northern opinion to the war along with giving the south breathing space than they do European support. Wiki's article on Antietam cites Sears as saying that:
Some Confederate politicians, including President Jefferson Davis, believed the prospect of foreign recognition would increase if they won a military victory on Northern soil; such a victory might gain recognition and financial support from Great Britain and France, although there is no evidence that Lee thought the South should base its military plans on this possibility
(emphasis added by me)
Later on you can also see some attempt at prolonging the conflict by fighting defensively in order to influence the presidential elections. Besides, just what else other than trying to influence northern opinion and bringing the Europeans into the war was going to win the war for the south? They could hardly invade, occupy and conquer the North after all. If you have some ideas as to what would have worked better feel free to air them.
I'm not saying Lee is a bad general. He was quite brilliant, but I wouldn't say moreso than Winfield Scott or William T. Sherman. I honestly think Longstreet and Jackson deserve about as much credit as Lee does.
Credit yes, but neither of them had the ability to command an army. Jackson would have had half his divisional commanders on a charge and whilst I'm very fond of Longstreet didn't seem very capable of independent command.
2nd Manassas was a victory seized by Jackson and Longstreet before Lee had influence on it.
Interesting statement given that AFAIK Lee was on the field and with Longstreet when the latter launched his assault.
The Maryland campaign was an ill-conceived disaster.
Given the situation a disaster would have been the ANV or a significant section of it being wiped out or captured, what happened was more of a setback.
Antietam should have resulted in Lee's discharge. Had a stray shell killed McClellan, the whole rebel army would likely have surrendered, pinned against the river.
Highly unlikely given that McCellan spent most of the battle quite some distance from the action. Besides of those corps commanders present only Franklin might have been interested in pressing an assault had this injury occurred midway through the day. Sumner and Porter were nearly as cautious as their chief, Burnside was busy blundering about on the left, Mansfield was dead and Hooker had been carried off the field injured.
At Chancellorsville, Lee was badly surprised, and only saved by Union command failure again.
So presumably the bold separation of his army in the face of superior numbers had nothing to do with this? Is it not possible that the confidence this implied helped persuade Hooker against further action?
At Gettysburg, there was much to lose and little to gain by attacking at all.
This is a rather vague statement, are you referring to the entire battle or just one part of it?
1865 was a capitulation delayed months too long. Few generals have spent blood so freely and been so honored for it.
I can think of quite a few actually, Napoleon comes to mind and it could be argued that he gets even more honour out of his "body count". Lee seemed to care a bit more for those under his command though, its hard to imagine him walking down bloody lane and commenting that one night in Richmond will replace the dead found there.