I'm aware of that, and that's not why I'm calling BS; I'm calling BS because I'm definitely not missing 163 rings in Silver RT - I've been through the whole level multiple times, breaking every box and collecting every ring, and there aren't any extra rings either. Even if there were rings I was missing, there's definitely not 163 of them. As for mission 2, there's just no way to get that many points because the only things that will give you points are the time bonus and breaking boxes - boxes give you 20 points each and the mission ends if you hit the wrong one, and the time bonus doesn't give you 40,000 points.
Besides that, I don't think he's cheating... just that he accidentally submitted incorrect stats.