If there was an alien invasion, who do you think would end up worse off, the aliens or the humans?

Question: If there was an alien invasion, who do you think would end up worse off, the aliens or the humans?
- Keywords:
  alien,
  earth,
  war
Asked by to Anna, Fiona, Kevin, Darren on 26 Jun 2014. This question was also asked by .
- Zhiming Darren Tan answered on 26 Jun 2014:
  
  If they came all the way to earth to invade us? Certainly humans.
- Kevin O'Dell answered on 26 Jun 2014:
  
  Good question. I suspect it’ll depend entirely on the biology of the aliens and the weapons they have.
  
  Assuming we have Luis Suarez on our side and an endless supply of dentists, I’d be confident that the aliens would be banned for earth for a great deal more than four months.

Question: If there was an alien invasion, who do you think would end up worse off, the aliens or the humans?