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The tech is somewhat different, Tezos platform will be released way before EOS platform is released. How will they compete is not a big thing, which one will be able to take a bigger bite of the ETH chain is the real question.

EOS is supposed to launch next Fall I believe (2018), so I'm not sure how much sooner Tezos would be planning to launch before? Seems like fundamentals would need to be really good. EOS is promising a lot, so if they can deliver it sounds like a huge dominating block chain.