The superman MU sucks, but I think NDZ summed it up pretty well in his MU writeup. Stay on him, use escrima 113 to punish his strings, don't rely on staff too much (he will punish it), and try to keep him grounded with pressure. You have a lot of tools that beat his reversal options, other than his super, of course. When their rushdown isn't working as well as usual, most supes start to try to zone. Remain patient, duck the zaps, jump and block his air/mb lasers.
To my fellow NWs, don't be so quick to write off escrima!