They are pretty much the same as far as resistance to attack going by the ratings. The Bulldog is less weight to carry. They both weigh more than the Kryptonite Mini by a noticeable amount. They are more resistant to prying due to the double locking barrel I would guess.

I've used a full sized Bulldog and a Pitbull Mini.

When is Kryptonite coming out with a New York Mini is what I would like to know.

It will be heavy too, but a better lock by a goodly margin.