Maybe this would be better in an "I judge" thread

:
A close friend of H and I recently informed us that they were getting a new dog. A pitbull. An abused pitbull found tied to the side of the road left for dead. The friend and his GF have 2 children together... 2 and 4.
I do confess, I know nothing about pitbulls besides a handful of incidents I've witnessed at the dogpark. For example - a pitbull and a lab were playing and all of a sudden the pitbull went nuts and bit the lab in the throat and kept diving for it's throat after it unlatched. The owner was literally kicking it to get it off the other dog.
Thoughts on pitbulls? Would you ever own one with small kids?
Also, H and I are kind of torn weather or not to voice our concerns to them. I know I'll probably hear "stay out of it, it's none of our business" but one of the kids is our god child. The friend just told H last night how nice the dog was, etc. I honestly don't think they have any idea what MAY happen when deciding to take in an abused pitbull. Do you think we should say anything?