Rangnick feels that Haaland has separated himself from competition like Mbappe, ahead of his Austria side's clash against Norway in the Nations League.
"Until a few months ago, I would have said that [Haaland] and Mbappe were the best strikers in the world. At the moment, I think Haaland is the best, but that is also because Kylian is not in top form," the former Manchester United boss said.
"[Haaland] hardly has any weaknesses. For his size, he is extremely fast, agile and has incredible jumping power."