In fanfiction, Naruto's powers are more supernatural in nature. His ability to use chakra to run up walls or on water is very different from the Turtles' acrobatic skills. But when it comes to combat, the Turtles' training in close - quarters combat can be a match for Naruto's ninjutsu. Also, the Turtles' unique personalities play a role. Leonardo's leadership might be compared to Naruto's role as a leader in his ninja team. And the Turtles' loyalty to each other could be seen as similar to the bonds Naruto has with his friends, which can also be considered a form of power in both universes.
The powers are quite different. Naruto can perform amazing feats like summoning giant toads or using shadow clones. The Turtles are strong and agile, but their abilities are more in the realm of martial arts. In fanfiction, some writers might give the Turtles some new powers inspired by Naruto's chakra system. For example, they could have a form of 'turtle - chakra' that gives them enhanced strength or speed. Meanwhile, Naruto might face challenges in the Turtles' world where his big - scale jutsu might not be as effective in the tight alleys of New York.