Comparing a Video Game to a human being is stupid.
The Assassins Creed games have very little variety besides location. Black Flag was the most unique out of all of them IMO
By that logic, then all these are true...
"The only difference between humans is skin color and other boring stuff like that"
"The Street Fighter games have little variety besides graphics and DLC"
"All the Batman games are the same they just have different places"