I think he means operationally they are the same i.e. port timing, compression and carb are similar/same. Similar prop, weight and power.
It is a copy of a G26 anyhoo.
16*8 seems perfect prop. Much more power than the melody/SPE 26. It gives slightly less power than a 4stroke 180 glow on an 18*8. As expected, the 4s 180 converted to petrol on 16*8 gives a bit less than the CRRC on a 16*8.
Very pleased with mine.
(CRRC and SPE cylinders)
(180 on petrol)