How powerful is Suigetsu's Water Release: Demon Fish?

[sharingansennin]

[video=youtube;PAnUQG-PQAc]http://www.youtube.com/watch?v=PAnUQG-PQAc[/video]
This is a technique that held back the 8 Tails, one of the most powerful Bijuu's imo at least. What summon do you think he could defeat with this technique

 

[deadp00l]

Not a very extraordinary feat, even gamabunta held down the ninetails which is a lot bigger than eigth tails

 

[Beauty Busty Beast]

held back gyuki?
8 tales just raped the shit out of suigetsu.

OT: I think it can be used to fight against other summons but it is a bad match up against raiton users.
If that think can eat you and you can't get out, then it as good as Kisame's jutsu

 

[YellowFang]

- Only works in large reserves of water...
- Completely annihilated with an average sized TBB...
- Didn't had any notable destructive or defensive feat...

 

[Beauty Busty Beast]

- Only works in large reserves of water...
- Completely annihilated with an average sized TBB...
- Didn't had any notable destructive or defensive feat...

Suigetsu tanked dat shiet, it is quite a feat.

 

[itachi uchiha fiance]

he need water source for it and it is not too much powerful imo