While all other currencies are like rockets aiming to land at Moon, Cardano is a space ship which can travel at lightning speed to new worlds.
What I like about Cardano is that the methodologies will be peer reviewed. Ouroboros was accepted at Santa Barbara Crypto Conference. We live in Trump's era, where everything needs to be fact checked.
The code will be done in Haskell which is functional programming language and hence easier to related to the math proofs. The code will be audited by third party.
It covers mainly three aspects - Scalability, Interoperability(much need due to backlash by govt. regulators) and Sustainability.