> If Cybertron is the size of Earth's moon (and that's generous), and Unicron is about the size of Cybertron, his hands would be about the size of Europe and Galvatron (to the right) would be about the size of Denmark.

> There is no explanation for any of this. Just go with it.

#tfwiki best wiki

http://tfwiki.net/wiki/Scale
Scale - Transformers Wiki