I guess the Alliance walking away is supposed to make the Alliance feel good. Talk about pathetic story telling on Blizzard's part.
"Hey, you're completely beaten down, but we'll just leave because you helped fight against Garrosh."
Give me a break. Blizzard officially spit in the face of half it's play base right there. Not only that, but they went with the most obvious choice for a replacement, thereby giving no one a decent story ending.