You ask why manufacturers publish hp ratings at rpms that their engines will never reach. Why are thrust ratings published with no criteria to get it. SALES, SALES, SALES I've actually seen posts where people actually believe these ratings mean something.
Engines from mainland china are all the buzz in the forums and at the field..because of advertising, news reports, and press releases. What do these advertisers have to say..amazing power, blazing speed, affordable pricing. Reviewers seldom review engines that have remained unchanged for years. Recently MAN relaesed a shootout where the old FOX .60 out powered all competetors. The K&B .61 twist was not included although that company has been established for much longer and has produced more engines than many if not all the others.
Enya, Fox, K&B, and Webra don't spend the advertising dollars that OS, TT, ST, GMS, and Magnum do. The multi color catalogs with glitzy pictures feature and promote the latter group of engines. The engines produced by these manufacturers are not much different in street price (except OS). The latter group in head to head testing seldom out powers or outlasts the modern offerings from any of the Enya, Fox, K&B, Webra.
I have noticed that the Russian companies have built quite a good reputation (except MDS) not on advertising but on sold performance and superior design. They are to be commended.
What does it say for our intellegence level if we are duped by advertisers, pretty colored pictures, slight of hand, and down right lies.
I test them myself on my own bench, with my own test props, and in the air.