Hiruzen, high - extreme diff.

Gonna go with Hiruzen here

How come^/^^

Kisame high diff.

Kisame high diff, elemental jutsus don't work against samehada. The real problem would be Enma.

Until he pops the water bubble.^

I'd argue that these two might be the most underrated characters in Part 1/Shippuden.

Kisame is definitely underrated. Idk, I think people respect old Hiruzen in 2024.

Kisame can't possibly defend against roof tile shuriken

Roof tile shuriken is just a random jutsu. Orochimaru dodged it jumping.