I really don't think that's too bad *shrugs*
We've had Rory for almost 2 months, and it's been pretty difficult thus far to get him and the chis to get along. We still have to constantly supervise his interations with Tucker, and things can get really frustrating at times. Rory gets along great with all dogs, but there are times when he can become too rough with the chis and we have to direct his attention elsewhere (Buster Cube, frisbee session, ball, etc).
But yeah, I don't see what's wrong with that Craigslist add... it seems like they're trying to find the best possible home for their dog.