I weighed mine when I got them, I'm almost certain (90%) they were heavier than claimed, but I'm afraid I don't remember by how much. Sorry, not to much help I know. The brakes have been great though (I don't really have anything to compare them to since it's my first cross bike, sorry also not very helpful)
I've read several posts/reviews that said they're more powerful than TRP's wide-profile models. Even if they're heavier than claimed, they're still lighter than my Shimano R550 cantilevers.