Klaus Tuchel picked him to get them here. He was shit against Norway but overall he's been decent. Noni is a fine player to throw against most international teams, same way he's been best for us against lower quality European sides. He's a good player against those sides, they generally struggle to match his speed and dribbling so he gets that extra yard. Its no surprise as the competition has gone on he's been less effective. I'm guessing Tuchel thought Saka would be more ready by now. Although he'll probably push him through these next rounds.
Morgan Rodgers is nothing like Madueke. His vision and decision making are in a different league to him. Morgan is much technically better too. Noni is a no end product type, Rogers can pop up at any moment with a goal or assist.