Not.
I know some “uneducated” 100 ton Masters who are able to manage their crews better than some Unlimited C/Ms or Masters. You imply that having an Unlimited license somewhojw raises that individual to a position and skillset that just can’t be realized unless one takes CM/Master classes. Horse Puckey! There is no guarantee of better professionalism by virtue of holding an unlimited license. I will appluad anyone, especially the hawsepipers, who in this day and age take on the challenge of the “upper level” licensing structure. But I’ll also point out the example of “professionalism” aboard a large ship that left the greatest impression on me: The galley table for King’s Pointers, the other table for SUNY, the other table for CMA, and the hawepiper table. No mixing allowed! We can bang our class rings louder than those guys! How very professional. In my humble opinion, there is nothing more professional than a hawespiper Master who remembers his roots, and actually goes on deck and chats with the ABs and even now and then picks up a needle gun. When’s the last time you saw that on a ship?
Off the top of my head, I’d have to say that the deck officers of a 9000 ton chemical tanker are probably quite good at taking her across the pond, but they have no experience handling the ship in pilotage waters or near a berthing area. And boathandling, no matter how you want to discount it, is a major compnent of an OSV deck officer’s responsibilities. No one expects a 3m on a ship to even know what the telegraph does, but a green Mate on an OSV is going to learn how to drive the thing right off the bat. And so the OSV Mates and Masters have a whole 'nother set of competencies (boat handling) that must be factored into their definition of “professionalism”. An Anchor boat Master looks at a 9000 ton OSV and thinks “Cool! This is going to be fun!”. He doesn’t think about arbitrary tonnage numbers, and it never occurs to him that he, because of a lack of ambition or test taking skills, is in the opinion of some not qualified to operate that vessel.
There is no magical mystery about handling large ships vs. handling vessels <1600 tons. Physics is physics, and they all behave and adhere to physical laws. Ask anyone who handles a variety of vessels on a regular basis. If you undertand mass, momentum, and inertia you’re going to be fine. It is just a boat.