@Superking500. If no player made mistakes, then every game would be won by the player playing White since if both White and Black play flawlessly, White maintains the initiative throughout the game and turns a small positional advantage into a win.
Nonsense. Almost every strong player who has thought seriously about this issue believes that White's slight advantage is not enough for a win, and chess is most probably drawn given perfect play by both sides.
carlsen is good at giving away advantages for trading in other advantages. in both of the above mentioned games, he maintained his outside rook's pawn and both his wins were supported by that pawn.
in his game against nakamura, he temporarily sacrificed a pawn, gave nakamura a q-side majority, but got a mobile center.