An excellent example of a standard propaganda technique. A polarized argument - "vastly superior in every way" - is advanced with nothing to support it. Another use of the same propaganda technique was Joseph Goebbels' argument that "Arians" were vastly superior to Jews.
So let's deconstruct this, shall we? How many ways are there for one truck to be superior to another? Is the windshield superior? The brake lines? The Schrader valves on the AC lines? Bumpers, body metal, headliners, gear shift knobs, gear ratios? There is, in fact, as many ways for one truck to be superior to another as trucks have parts.
And what does "vastly superior" mean? How would, say, the gas pedal on one truck be vastly superior to another truck's gas pedal? Jake said, "in every way," so a Gen 2's gas pedal has to be vastly superior to a Gen 1's gas pedal. That's what he said actually means.
So, of course, this use of an old propagandist's trick is both false and misleading. That's why no proof is offered, because it's impossible to prove. This is especially so because there are likely to be plenty of part numbers common to both Gen 1s and Gen 2s. Those parts can't be "vastly superior in every way" if they're the exact same parts.
This would be more fun if it were difficult. Oh well.