Support for Bitcoin Classic is exploding. It is already at 15%, which is quite an achievement given that it has only been released officially for a few days. It is also competing with many nodes that have not been updated in a long time.
At bitnodes.21.co, Classic:0.11.2 is at 894 nodes (14.85%).
The newest version of Bitcoin Core - that was released before Bitcoin Classic, has 162 nodes (2.69%).