Why does Nebula look different?
Why does Nebula look different? In Vol. 3, Nebula has a more human response to her interactions than in previous films and was intentionally made to look more humanlike as well. In fact, her makeup plays into part of Rocket's backstory, which was a note from director and writer James Gunn.
Why is Gamora better than Nebula?
Nebula and Gamora's fight during the Battle of Xandar proves that it is Gamora's ability to regenerate quickly that gives her an edge over Nebula.