Sorry, didn't mean the actual link was incorrect, I meant the description on that page. It describes it as having a pin-tumble locking mechanism but I'm pretty sure that's a warded lock. At least the brass lock you link to has a pin-tumble locking mechanism. Not that Master pin-tumbler locking mechanisms are all that great, but they're better than warded locks.
What do you mean with incorrect link?
I did some research, and found this on masterlocks home-page
It is an adjustable shackle, so it can be used to lock more stuff, apparently... I'd say the cuts will weaken the shackle a lot, making it useless against a hammer, but.. I'm no security expert :P
At least this thing I can imagine being weaker by a lot....