Use of Time wrote:
Humans - Most resiliant and have gone up against all of the above. Despite not being godlike, technically/genetically enhanced, or physically stronger (like the Hirogen), humans never seem to back down when they think they are in the right or have something to defend. Toughness isn't about bullying people with your superior power, it is about how you react when you are pushed beyond your limits.
This was my reply, as well. I cannot improve upon your assessment.
Big Boo wrote:
^It's more like "Of the strengths shown", who do you think was the strongest.
I still vote for Humans, for the above stated reasons.
“When all Americans are treated as equal, no matter who they are or whom they love, we are all more free.” -Pres. Obama
"A great democracy does not make it harder to vote than to buy an assault weapon." -Pres. Clinton