Nightwing for the win! Grayson knows way more fighting styles. He's way faster and more agile. I believe he'd have for better defense as well, and would make it very hard for Moon Knight to hit him. Nightwing also has the escrima sticks that would make a big difference I think.
City Fall was one of my favorite story arcs in recent memory. The whole arc, the micro series issues, and getting to see how each supporting character and NYC faction fit into the universe was really awesome! The story was well-written and Mateus' art was top notch. Looking forward to the next arc, but can't wait to see them dive back into Shredder's next attempt to take over the city. IDW's TMNT has become the definitive turtles universe imo. I've loved everything they've put out thus far!