Well, maybe not a "lie", perhaps just an exaggeration?
But, if one removed a bunch of worn-out crap, replacing with this new stuff, well then!
And, engine photos #1 & #2 are the same photo being used for each individual product; not so uncommon a practice I suppose, but if I were producing any quantity of examples I'd get a second (different) photo up. And yeah, with my own rocker arm product being displayed also!
Also, though very likely to start trouble here, not to mention likely to derail the intention of the O.P.s' inquiry, but the statement as made of: "This system seals off the problematic head oiling passage and uses a superior pushrod style oiling", and though this is popularly presented often, it should be tempered somewhat with a functional understanding rather than just blatantly stated as a matter of fact.
Scott.