Benzema, Vinicius Junior and Rodrygo are all talented. However, the outcome of Real Madrid's match depends on Benzema's performance. At least that's what we've seen in past Champions League matches. In the matches that Benzema did not play well, Real Madrid did not perform as well as expected. However, Vinicius has performed well in several matches.
Actually in this case there are several other players who can be used as Super Sub like Asensio at Real Madrid because he is still quite good as a substitute.
For Benzema, maybe in this match they will keep Benzema quite tight like when City against Madrid in the previous round.
But indeed in this match Liverpool must also anticipate the movements of Vinicius and Rodrygo because Rodrygo's movements are sometimes dangerous