Well the REISSUED Pro One is 16x19, but the one from 1991 was 18x19.
After playing with one, I would not find it super hard to beleive. It plays incredibly well.
I would love to get a Head Trysis and compare them. I am sure that is a killer stick also.
Anyway, I have no idea one way or the other. But the guy who told me this has been a FL tennis player for years and UTSA teaching pro, so he may know some folks down in Bradenton