I like both games, but TBH Nate is a bit of a sociopath. His main motivation seems to be cold hard $$$ and his justifications for straight up murdering people are... flimsy
. "YEAH so I just killed like 80 humble security guards but goddamnit, I was trying to find a key!"
Lara is in it to solve the historical mysteries and, generally, she isn't killing people for any reason other than that they're already trying to kill her... so I guess Lara is the better character.