A 20 cc DLE is really as powerful as 90 FS glow engine. Not more as some claim.

But the weight difference makes the glow engine a better "performer". The glow engine is lighter.

But still , why would DLE market a 15 when they are selling a 20 as fast as they can make them.

It is not going to be better in any way, plus less powerfull and a poor performer ( weight).

Same goes for a 35 , when they are selling a very good 30?