Re: Who was the best water release (suiton) user?
He can waste massive amounts of chakra on it. I don't even see Tenten dead from that jutsu, and she's fodder (not to mention she was carrying something on her back).
Originally Posted by Exaar
Tobirama, on the other hand, used his suiton and almost suffocated Hiruzen (after Hashirama gave him that nice combo). Also, his suiton is shown to be more powerful than even Hiruzen's katon (fire release) as it evaporated the flames. So even IF Kisame can use suiton at anywhere near the level that Tobirama can (which he cannot), Tobirama is shown to use it much more effectively.
Back to why Tobirama is a better suiton user:
Tobirama, after just one suiton jutsu, already leaving an ANBU in awe and stated to be Kage level (heck, he's even placed in the same category as Hiruzen and Hashirama since he isn't referenced seperately from them).