totally disagree just cause a dog is tall doesn't mean its fast some of the fastest dogs ive seen are around the 26 mark
That's why I said, all things being equal. There's going to be 20" dogs that are faster than 27" dogs but they won't be equals.
With the greatest respect, you ain't seen enough if they're the fastest dogs you've seen. It comes down to physics. If you've got 2 dogs with exactly the same muscle to bone to weight ratio and the exact same ratio of length to height but one is 24" and one is 28" then the 28" dog will be significantly faster than the 24" one. There's no denyi