As for the topic itself, I believe this has to be intentional. It's too weird a coincidence for what are, in my opinion, the two best franchises at developing pitching to have the same zag when everyone else is zigging.
And velocity can be taught, at least to an extent. The Twins have made their hay by churning out big righties who throw 95-98mph... except those guys were drafted from lower-tier schools and in college, were often throwing 88-91mph. Louie Varland, Bailey Ober, and David Festa are three examples. The Twins were even able to take Joe Ryan, pluck him out of AAA in the Rays' system, and turn him from a 90-91mph guy to a 94-95mph guy.