I'm not a tobirama fantard, but (and don't quote me on this) wasn't tobirama such a powerful adept suiton user that he didn't even have to weave proper hand seals for the jutsus? Suiton Suuriyudan (dragon bullet) requires 44 hand seals. He pulled it off in one....
You must be registered for see images
Not a tard, just wondering if Kisame did that anywhere? Also says he was a such a powerful suiton user he could use water techniques where there was no water, basically creating water out of the air or whatever, however, kisame also did this when he was fighting Gai's team in the desert. So my main logical point would be the hand seals thing.
Seriously though, don't really care about the Second, just the facts.