On that note (besides me being blind and adding an extra digit in my head. ), re-looking at the scores, the R9-290x doesn't appear to be even as fast as an GTX780. Am I reading that wrong?
That list only shows the top 100 scores, so who knows if the single 780 scores listed there are overclocked or not.
The SLI perf looks to be slower than Titan, so I would expect the same trend with a single 780.