Considering we've already gotten started and have been posting for a while anyway, a system at this point would be moot.  It'd be too big a change and just more work for the GMs anyway, of which they have enough as it is with the group already.<br/><br/>As for your question Tanner, Flashpoint Paradox, the movie any way, did a pretty good job of showing that exact confrontation to some degree.  By the end it looked fairly obvious Atlantis had the upper hand given their vast technology and their control of the ocean's creatures.  That said, in a straight fight, I'm not so sure who would win.