Sorry I haven't analyzed Counterparty. I am at the limit of altcoins that I can research. I need focus more on my own work. After studying dozens of altcoins from Stellar to Factom to Iota to Dash, etc and finding flaws in all of them, I am confident there is nothing out there that is doing block chain consensus in a way that can scale (to millions of users) decentralized, not even Monero.

Obviously Counterparty is built on Bitcoin's block chain so inherits the scalability issues plaguing Bitcoin.