At same BP, edo hiruzen is not a godlike position1.
More usefull as a support with his 40% buff for 9 ninjas and for 5 rounds + his ignite chase on 4 ninjas.

It's still a very good ninja, but no immune, no cc, no dodge. A+ is a good rank, maybe he should be ranked as S, but definitly not S+

[and btw, @general tier list, edo hiruzen is ranked as S+]