I'm neutral I like Naruto and sasuke equally however........
You don't see people trying to claim Naruto can beat Kaguya or Madara.
You don't see all that many people trying to claim Naruto < Sasuke.
It is just annoying.
It is an inferiority complex. Manga facts got the sasuke fans insecure and salty. He couldn't beat Kabuto without Itachi, he couldn't beat Obitio without Naruto's help, Madara without Naruto's help, and he couldn't beat Kaguya without Naruto's help then to top it all off he fought to kill despite the opponent not and had 8 more bijuu and still lost to Naruto in the end(
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). Naruto fans don't care, however sasukebase gets desperate as possible to say Sasuke is the strongest.