The Mast on an ARC 22 is 6 feet taller than the ARC 21. I never pitched a boat until I sailed the SC 20 with Tall Rig which has the same mast height as the ARC 22. I have stuffed the short rig many times without pitching but the extra 6 feet make a huge difference.

arbo06 and I burried the tall rig pretty far a few times in 30+ winds with out pitching it though.