I am going to give you a factual explanation of how Minato beats Tobi as he is now.
The Six Paths receive chakra from the main body, the main body has to be close to the paths so that they can receive chakra which is why Pain couldn't just send his bodies to invade Konoha. If Minato teleports the paths to a location far away from Tobi, they can't receive chakra will become dead bodies and he can seal them. He can use the Four Symbols Seal to seal them into a kunai, this seal according to Databook seals a target into an object or a living being.It was used with another four symbols seal to form the Eight Trigrams Seal and since Minato could perform the sealing in his last moments it doesn't take a long time. Minato will mark the Six Paths then teleport himself to a remote location, summon the eight trigrams throne and place a kunai on it in that location, teleport back to the paths then take them one by one to that location and seal them into it one by one before Tobi can come to the rescue then face Tobi one on one.
Beating Tobi one on one will be easy, he places a ftg seal under his feet and charges at Tobi, Tobi charges at him like before, he throws a kunai Tobi let's it slip through him and when he catches up to Tobi he markes the ground with the seal under his feet. Tobi solidifies to attack with either absorbing or Rinnegan soul sucking, when he makes contact with Minato, Minato teleport to the previously thrown kunai and tries to attack with a kunai, Tobi this time repels him with Shinra Tensei then he teleports to the ftg seal he marked on the ground with his feet and attacks, Tobi can't repel him cuz of the 5 second limit he stabs him in the Sharingan destroying his time space abilities, marks him then teleports and kills him with a stab to the brain.
The Six Paths receive chakra from the main body, the main body has to be close to the paths so that they can receive chakra which is why Pain couldn't just send his bodies to invade Konoha. If Minato teleports the paths to a location far away from Tobi, they can't receive chakra will become dead bodies and he can seal them. He can use the Four Symbols Seal to seal them into a kunai, this seal according to Databook seals a target into an object or a living being.It was used with another four symbols seal to form the Eight Trigrams Seal and since Minato could perform the sealing in his last moments it doesn't take a long time. Minato will mark the Six Paths then teleport himself to a remote location, summon the eight trigrams throne and place a kunai on it in that location, teleport back to the paths then take them one by one to that location and seal them into it one by one before Tobi can come to the rescue then face Tobi one on one.
Beating Tobi one on one will be easy, he places a ftg seal under his feet and charges at Tobi, Tobi charges at him like before, he throws a kunai Tobi let's it slip through him and when he catches up to Tobi he markes the ground with the seal under his feet. Tobi solidifies to attack with either absorbing or Rinnegan soul sucking, when he makes contact with Minato, Minato teleport to the previously thrown kunai and tries to attack with a kunai, Tobi this time repels him with Shinra Tensei then he teleports to the ftg seal he marked on the ground with his feet and attacks, Tobi can't repel him cuz of the 5 second limit he stabs him in the Sharingan destroying his time space abilities, marks him then teleports and kills him with a stab to the brain.