Windows is teh 3mpire!

As an aside, can I just ask here, the second Death Star was larger than the first, and the first was the size of a 'small moon', which is presumably bigger than a 'large asteroid'.
If this is the case would not:
a) Such an object have a large effect on the gravitic tides of Endor, thus causing massive tidal and environmental changes?
b) The destruction of a generator powerful enough to create a laser that destroys planets have left Endor a flame-ravaged husk?
c) The destruction of a shield generator powerful enough to envelop a moon in orbit have had much the same blast area as a massive nuclear detonation?
Just curious
