I'm not a big Pascoe fan so don't take this wrong. But how does he relate the two. A perfectly well built quality boat may have missed the market it was meant for. So after a three or four year run it may get the axe for a redo in the same boat but under a different model name. On the other hand some boats have hundreds of hulls out there and they are junk form number one through number 101.
OK, if they re-do the boat under a different model name for marketing, or if they make an upgrade to a model that equates to a model name change, that is really the same boat, just improved or renamed.
The logic is that a boat manufacturer comes up with a design, builds one or two as beta models, then puts the boat into production.
As the fleet grows, feedback comes from that fleet. That feedback fuels improvements to the boats design. As time goes on, the boats being manufactured incorporate these design improvements, making for a better boat.
I am a big fan of Pascoe. His commentary is not what production boat buyers sometimes want to hear, but I've never been able to fault his logic, or his technical accuracy.
BTW he is especially hard on what he calls "price point boats", IE Bayliner, Searay, Luhers, etc...
That said, he also sang the praises of the Bayliner 38/39 and 45/47' boats because of their long production runs making for a very good quality boat.