I don't know what you expect if the battle's conclusion relies solely upon thought processes. But in any case here is some proof concerning Tobirama:
- First of all, he invented the edo tensei. Yes, Oro said it was 'straight-forward,' but that seems to me to apply more to the execution than the development of the tech. And of course Oro is also quite intelligent, so perfecting ET could be an easier task to him than most. In any case, it is hard to say inventing a technique of the caliber of ET requires only a rudimentary mind.
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Here we find out that it is Tobirama who discovered both the reason for the sharingan eye and its connection to Uchiha emotions. This is the sort of thing that supports a more intelligent mind that goes beyond mere skill in jutsu.
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Here we see that instead of an idealistic view, Tobirama is pragmatic and logical when it comes to problem-solving. He thinks of a plan that both contains the danger of the Uchiha while placating them and giving them a duty to excel at. Whether or not this worked out for the best (and if not it is because of one of Kishimoto's main messages, of love and ideals and such as opposed to logic), Tobirama was nevertheless thinking in a calculated manner as he would in the present case.
- Now, though he plans to attack Sasuke, we can clearly see in the manga that Tobirama is a calm and collected individual, even cold, at odds with Hashirama's laid-back personality. Therefore it can be assumed that in a battle Tobirama would be calmly analyzing his opponent for a weakness, especially one such as the 3rd Raikage.
- As a child, such as in the most recent chapter, we see that even then he was not idealistic at all but logical, especially when he reprimands his brother, Hashirama. Doubtless his sensing skill is due to a prepared and cautious nature, rather than a more reckless one. This nature is the type of thing that lends to the idea of him scouting the Raikage's skills and weaknesses.
And as for Naruto, though his clever little tricks in battle have often earned him the win, we can find countless examples of his rather monumental, shall we say, bone-headedness. I think if one clearly assesses the relative intelligence levels of both Naruto and the 2nd Hokage, the conclusion that I have drawn is not in the least absurd but in fact quite easy to reach.
As for the actual battle situation, with Tobirama's thought processes-- since this battle has never happened, no one can provide exact proof that Tobirama would think this way. Of course, asking for this is nonsensical seeing as how not every versus battle has happened in the manga-- and to use battles already existing in the manga would be meaningless. No, we have only our logic, and with this one can easily see that Tobirama could figure it out. I have already in previous posts shown how easy it is for one to do so-- I, for one, cannot imagine the idea escaping me if I was placed in this situation and had the calmness of Tobirama-- and in this post, I have shown that Tobirama has the necessary brains to come to a possible solution. All that is left is to realize that at some point in versus threads one must utilize logic to reach a reasonable conclusion.