These are two completely different things. I don't think you understand what TOR and Zcash mean.
TOR is a network level security, it hides your IP address, so people can not locate you while you have your wallet client connected to the network. Your transactions can still be traced on the blockchain with your wallet addresses.
Zcash hides the trace on the blockchain. Your coins on the wallet can be generated from completely unknown addresses so no one can link them to your wallet address. But the connection to the network is not protected, your peers will see your IP address.
DeepOnion is planning something called DeepSend which is to hide the traces of the transaction in the blockchain, it is some sort of mixing service with the wallet I guess which will further enhance the security of DeepOnion.
Glad to read more and more explanations about DeepOnion, over all for those that are not tech skilled. Let's build a great community!