That's interesting - I do remember reading somewhere (maybe from Mr. Sheldon Brown) that the idea of V-brakes being 'mega powerful' was a bit of a myth. Maybe just *seem* that way to someone coming from vague memories of piss-poor centre-pulls with prehistoric brake blocks on steel rims.
So Tektro actually went to the trouble of crippling some of their V-brakes for 'casual riders'. LOL