> * not all clients can act as superpeers, you will have a mixture.

Yes, not all clients will be unable to act as Ultrapeers. That's why a user can choose to be a shielded leaf node if they don't have the resources to act as an Ultrapeer.

> * give some statistics how high is the percentage of superpeer
> against nomal clients (leaves).

Honestly, I don't have those statistics. I don't see how those statistics would be beneficial to your arguement anyway.

> * you'll have a higher percentage of normal clients, this normal
> clients can also be any non-Limewire client

IF A CLIENT IS INCAPABLE AS ACTING AS AN ULTRAPEER, THE CLIENT CAN BECOME A SHIELDED LEAF NODE. Shielded leaf nodes connect to Ultrapeers and therefore benefit by having larger search horizons and lower bandwidth utilisation.

> Clustering of only Limewire clients brings less or no advantage,
> is unfair against others.

LimeWire clients are clustered together right now because LimeWire is the only client that supports ultrapeers! Geez, it's not like LimeWire is intentionally blocking other clients or anything.

> but the pictures shows not how clustering of Limewire clients
> will improve anything.

If you can't understand this simple concept, then there is seriously no reason to continue this discussion.