Here in the good ol USA- the object is to sell first - explain later -
The sad part and I know some of the mfgrs -is that they are concerned about supplying too much tech info -
The customer either gets confused (true ) or the info is contradictory to info supplied about thrust rpm etc -- this has gone on for many years - --glow engines rated a 4-5 -6 hp then some wild rpm figure to " prove_ it - all Bull shot
it is simply puffery -in legal parlance and it is common practice.
The product can be very good --or very bad - it remains up to the customer to sort it out - or take legal action --another good ol US institution (learned from the English)