Yes, it cannot be denied that Al Nasr's current performance is quite good, and Felix's presence will also be a very good thing for Al Nasr, and being able to lead them to become champions in the Saudi Arabian League.
Al-Nassr truly have good start in Saudi Professional League and Joao Felix debuted well too. Hopefully this player will find a successful chapter for his career many years after leaving Benfica and moving over many big clubs from Atletico Madrid, Barcelona, Chelsea and AC Milan. Now, he has been playing for Al-Nassr in Saudi Professional League which is a backward step in his career but if he can play well, he will be called for the national team and can help the club considerably in tough title competition with Al-Ittihad, Al-Hilal and Al-Ahli.
Furthermore, it would be very useless if Al Nasr could have excellent goal productivity but lack consistent performance. Because in my opinion, consistent performance is far more important than goal productivity in making a team able to win a competition. So with that in mind, I think Al Nasr needs to maintain its consistent performance well. And it would be much better if Al Nasr could maintain consistent performance and score goals simultaneously. So, we'll see how Al Nasr fares in the Saudi Arabian League this season.
Winning a title means winning most matches and earning most points compare to competitors in a same league. Al Nassr in three latest seasons have never had problems with attacking power and scoring goals while biggest issues in their defensive ability. They bought several attacking players who are younger than Ronaldo and Mane, to enhance their attacking power. It is also good development and preparation for their future seasons but their chronic problems recent seasons, defensive system has yet been tested enough.