I did not state specifically that the Sharingan is absolute. It is physically impossible however for any regular person to have a better reaction than someone with a Mangekyou Sharingan. That is true. I stated however that it is only true if you had nohing to boost your own reactions. The characters you listed (except Naruto, assuming you're talking about his normal self) have advantages. Minato and Tobirama however can't actually react better. They physically can't, therefore they resort to teleportation, which only takes a thought. Minato can't dodge A straight on without prediction, and even then, just like Tobirama, he's only going to barely dodge depending on the distance or get hit.:| Come on now. Sharingan boosts the user's already existing reaction speed. By your logic, Minato, Ay, Tobirama, Naruto, etc can't have better reaction speed than: MS Sasuke, EMS Madara, MS Obito, MS Kakashi because "lol Sharingan". So yeah, that's very very very bad logic you are using there. Especially since Minato (who Tobirama is faster than) already physically reacted to Ay's max speed while Sasuke couldn't even follow him with Sharingan.
And the underlined doesn't even make sense. Strength is determined by many different variables while Speed is determined by 2 or 3 variables.
-Minato is stronger than Ay, yet Ay's reflexes are far ahead of his.
-KCM Naruto is stronger than Ay, yet Ay's reflexes are far ahead of his.
-Nagato is far stronger than Ay, Minato or Tobirama, yet their reflexes far surpass his.
-3rd Raikage is stronger than Ay, yet Ay's reflexes surpass his too.
And I could go on for paragraphs.
1. Obito's still.
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2. Obito dashes past them and rips them in half.
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3. Tobirama reveals he tagged Obito then.
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Thank you for the references. This shows though that Tobirama cannot physically react as I stated above. He had to use a precaution and probably had his hand in a position to mark in case. Naruto and Sasuke's failure to react happened because literally no one expect Obito to come from where he did. You can't put Tobirama at a level so high because neither parties physically reacted well.