They cannot have the same drag coefficient or the same lift/drag ratio so the rest of

Read it properly before jumping in.

I did NOT say they have the same drag coefficient did i ????

in fact i seem to think i said that plane A had 1.5 times the drag of plane B which is NOT saying the drag is the same is it ???

i said they DID have the same lift / drag ratio, purely for the maths, as a theoretical calculation.

Why can't they have the same lift/drag ratio. ?????