Certainly, if you're skilled enough, you can dodge most anti-air fire. However, if you're concentrating on dodging, you're probably not doing that well at attacking or using your skills. Managing your army is completely out. If you get careless or distracted, your Dragon will get shot down.
A 2 second cooldown per use of dodge is really excessive and would make Dodge pretty worthless to use, an a Dragon that can't dodge is very dead very fast. Having to wait 10 seconds to leave Dragon form is also pretty long.
A Dragon with skills that can easily destroy units with a value of 60 likely spent at least 60 Research points on those skills. No, it's practically guaranteed that they spent more than 60 RP.
