Taarabt has proven a regular source of goals for the west London side this season, netting four times and making five assists in 24 Premier League appearances.
The 23-year-old has earned a reputation as something of an enigma at QPR, but Redknapp believes it is only natural that Taarabt’s performances fluctuate.
“When you do what he does, he’s going to be inconsistent,” said Redknapp.
“The only player who can do what Taarabt does consistently is Lionel Messi.
“He never misses a match, he plays in cup games, but it’s hard to be consistent beating players, nut-megging players.
“You’re going to have great days and you are going to have days when you are up and down. That is how those type of players are.”
He added: “He wouldn’t be Lionel Messi, he wouldn’t be as good as him. No disrespect to Adel. I think Messi is the best player in the world. But Taraabt is a match-winner.”
Despite using Taarabt sparingly in recent weeks, Redknapp still plans to utilise the Moroccan as the season reaches its climax.
And the Hoops boss rebuked claims that Taarabt does not show enough commitment to the club’s cause.
“He was fantastic against Villa,” he added. “We need Adel for the final eight games, he is a big part of what we are trying to do. He is a decent lad.
“People look at him and think he doesn’t care but he does. I think he cares very much about how we do.
“He does his job when we haven’t got the ball. He has got a big part to play He has still got a big part to play.”