I don't know about you, but I feel much better now. The YouTube comments slam the slow tempo and blame it all on Maazel, the conductor. My sense of this is that the tempo comes from Battle. Would her interpretation be so divine at the normal tempo? I think not. One should not sit in front of ones computer and imagine that the singer has nothing to say about the performance.
You might like this one, too, at the more normal tempo with Christine Schäfer.