Tobirama > Itachi because....
1.) Suiton > Katon
In most instances, but not when it comes to Amaterasu, as shown with Bee [
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2.) Tobirama's experience fighting Uchiha
An experienced ninja can still get caught in Uchiha Genjutsu, especially when you're fighting against someone like Itachi, who relies a lot on using Genjutsu [
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] Experience doesn't guarantee anything.
3.) Edo Tensei (even though it is probably utterly pathetic)
We have absolutely no info on how good Tobirama's Edo Tensei was, nor do we know which ninja he summoned. So it can't really be used.
4.) Tobirama's S/T (since its hyped, it is on par with Minato's)
Again, we have no idea how that S/T works, so you can't use it in VS threads, as we don't have any info on the mechanics behind that jutsu
5.) Bringer of Darkness (if we include Anime) to cancel Itachi's wierd named 1 hit KO genjutsu.
Not canon.. :|
6.) Itachi can stay in Susano'o for 10 minutes at the most.
Based on what Tobirama has shown so far, that should be more than enough.
7.) Tobirama's and Itachi's difference in Stamina
Which is not that great. Even if Itachi's Stamina is said to be little, his chakra control was still great enough to outlast Sasuke
while Itachi was sick, even while Itachi was using the Chakra consuming MS techniques.
8.) Tobirama could have Penguin Sage Mode. *this point is moot, but I think he could have it.
Uhm, and how in the world did you reach that conclusion ? :| Either way, there's nothing we've seen so far which points to him having SM, much less
penguin SM...
I also like the fact that you completely ignored Itachi's Amaterasu is your so called "arguments" for Tobirama winning. The technique is instant, and even if we go by hype, Tobirama has shown nothing which points to him being able to avoid it nor counter it, meaning that the chances Tobirama might have had of winning the battle without the Amaterasu, just dropped to zero.
Sorry, but you're wrong.