Seems you've been living in the deep South too long and have drank up all the Kool Aide.

Grant knew that he had to hit Lee again and again since the ANV was the CoG, not so much Richmond. So he hit him hard at the Wilderness. When the Federals broke off the attack Lee (and many Federal officers) was sure Grant would withdraw. He didn't, he moved to his left. This threw Lee off his game a bit but he rallied well to block Grant at Spotsylvania. So it went until U.S. stole a march on Bobby and crossed the James, but his Corps were slow in taking Petersburg and so the siege began. Grant lost about 55,000 (which were fewer men than the Federals had lost in the three previous years trying to do the same thing) to Lee's 33,000, the key being the Union casualties were a smaller % of overall forces. Since Sherman at the same time was “making Georgia howl” there could be no shifting of Confederate forces between the theaters. Also, when Early threatened Washington Grant failed to react as previous commanders had; which was to withdraw and rush north. He kept focused on Lee.

Grant formulated his strategy based on his greater manpower to make his flanking movements and keeping his supply lines secure. Lee was able to counter since he had the advantage of interior lines, but only because he was obliged to defend Richmond and his supply line to the southwest. Grant had considered going west of Richmond with the same strategy but it would have unacceptably lengthen his supply line. He also factored in the desire that one of his attacks might break through to Richmond. Both Grant and Lee knew that a prolonged siege (whether around Richmond or Petersburg) would end the war in favor of the North.

Agree that neither Grant nor Sherman was a “great captain” per say, but neither was Lee (he was too Virginia centric and at times overly aggressive for the resources available to the CSA). In the aggregate, when one totals Grant's losses from Beaumont to Appomattox he lost fewer men numerically (and effectively won the war in the western theater in 1863) than Lee incurred from Seven Pines to Appomattox. Grant used his obvious superiority in manpower and resources to defeat Lee, like that's a bad thing. Was he supposed to just sit back like all the other AotP commanders before him?