[Crumpp]

Basicly you are using the wrong approach for this particular case;

Baloney. You are arguing that the speed reduction is insignificant but you fail to see the entire picture.

The small change in speed represents a very significant reduction in the aircrafts performance envelope. It's all tied together and you cannot separate the affect.

That aircraft's entire envelope is reduced.

No I am not "wrong". You wish to separate that which cannot be.

In fantasy land in a realm with no significance to the real world, weight affects are insignificant because top speed is only reduced a small portion.

In reality, weight affects are very significant and the number one concern of most designers.

Two wrongs do not make a right.

All the best,

Crumpp