It's certainly impressive, but dual Titans in SLI do considerably better than that. Dual Malta 7990s means quad-CF and all the problems that 4 GPUs bring. Tons of negative scaling for instance.
Though the bright side is that AMD is not releasing multiple >=$1000 GPUs per year as nVidia is doing, at least if the rumors are true. :P Lol.
Would like to see a single-GPU AMD card to compete with Titan.