Definitely ETH has more survivability. Ethereum was the first to successfully pioneer and develop smart contracts which so many ICOs are based upon. 2017 was the year of the ICO generating billions of dollars in funds raised. If there were no ethereum, there wouldn't be the same ICO success we see now.
But why not both? There is no reason they can't both survive as long as either are flexible to change and further develop in order to generate business value.
You are right but i still give it to EOS, though EOS is still new and very soon everyone will see it's full potential. Unlike Ethereum, EOS is an application platform, which allows anyone to write code and publish it to the blockchain and run it on the blockchain without needing to ask for permission. Simply, it is a hosting environment for decentralized applications, whereas Ethereum is like a micro-controller, EOS is an like an operating system running on a multi-core processor.