dog breeds? The American Kennel Club shows they are #61. There are a lot of unregistered dogs of all types. What information do you have that shows that there is a higher proportion of unregistered pitbulls? Let alone enough to account for them moving from #61 to #3 of most popular breeds? So yours was misidentified as a non-pitbull. That goes opposite to what you're arguing.

Sure, I'm sure some are misidentified, but you can't expect me to believe your last sentence:

"The percentage of attacks they account for are actually lower than many other dog breeds when these two factors are taken into account."

I would love to see what your source is for that statement. That doesn't square at all with all the studies out there.