Well, Naruto has had the advantage of learning from many great shinobi over time. He also has a unique bond with his friends which could potentially give him more strength. Minato, on the other hand, had a shorter lifespan to develop his powers. Naruto has had more time to grow and surpass his father in strength.
It's really hard to say. Minato is extremely fast with his Flying Raijin and is a very intelligent fighter. But Naruto has an incredible amount of chakra, his Sage Mode, and his Six Paths powers. If Naruto can get close enough to Minato, his brute strength could overpower Minato. However, Minato's speed and strategic mind might keep Naruto at bay.
Well, in some fanfictions, Naruto might be considered stronger because he has access to more powerful forms and jutsus. He might have mastered the Nine - Tails' chakra in a more advanced way than Minato could. Also, Naruto has trained with many powerful shinobi, which could give him an edge in strength compared to Minato.
The fanfic could portray Naruto as having greater physical strength and endurance. Maybe he can take more hits and keep fighting, while Minato might get tired more easily. Also, Naruto's strategic thinking in combat could be shown as superior, allowing him to outwit Minato in battles.
Well, when it comes to combat abilities in Naruto fanfiction, Sakura has some definite advantages. She's been trained rigorously by Tsunade. Her punches can cause massive damage and she can heal herself and others, which is a huge plus in combat. Hinata, though, with her Byakugan, can detect enemy movements precisely and her gentle fist attacks are no joke either. But Sakura's combination of strength and medical skills makes her a tough opponent. She can hold her own against strong enemies and also support her team in a fight, which gives her a bit more of an upper hand compared to Hinata in terms of combat abilities in fanfiction.
In some 'minato vs naruto fanfiction', there could be a scenario where they battle in a different dimension. Minato uses his Flying Raijin to quickly move around and Naruto counters with his shadow clones and massive Rasengan attacks. Also, a scenario where they fight not as enemies but in a friendly spar to teach Naruto some secret family jutsu that only Minato knew would be really cool.
One feat could be Naruto's ability to use Sage Mode more effectively. In some fanfictions, he might be able to maintain it for longer periods or use it in combination with his other powers more seamlessly. This gives him an advantage over Minato who didn't have the same level of Sage Mode proficiency.
There are many out there. A really good one might focus on the emotional reactions of Team Minato. For example, Minato might be proud of Naruto's strength and how he overcomes Pain. Kakashi could be in awe at Naruto's new techniques. Their reactions can enhance the overall viewing experience in the fanfiction.
Kushina could be an important character even though she's dead in the original story. In this fanfic, her spirit or memories could play a role in Naruto's upbringing. For example, Minato could tell Naruto stories about Kushina's feisty personality and her love for the village.
Sakura could be another main character. She might be shocked by Naruto's arrest and start her own investigation. Maybe she teams up with Sasuke, who also has his own complex feelings towards Naruto. Their combined efforts could play an important role in uncovering the truth.