Samus vs The Master Chief

This is something I've had in the works since January. Someone brought up the idea of "who would win in a fight?" between these two. So I had to try and draw it. It didn't come out as exciting as I'd hoped, but after trying to get the Master Chief and Samus' armor to actually look like they should I didn't care. x_x

So who do you think would win? My money's on Samus, I think.