Some (translated) paragraphs from http://www.chip.de/news/Kryptowaehrung-Was-neue-Generationen-wie-Tron-und-Cardano-besser-koennen-als-Bitcoin_139739383.html
Cardano and Tron - The challengers (3rd generation)
One thing first: there are many challengers for Bitcoin and Ethereum! And new ones are added every day. The selection of the two candidates mentioned is therefore purely subjective, as he gives them good chances for a sustainable establishment in the cryptospace industry. The decisive factor for this is the solution of concrete application problems and partnerships with other (well-known) companies.
Peer reviews can be imagined as a medieval inquisition in which the Haskell-based source code is put through its paces by a large number of technology-oriented programmers and crypto-enthusiasts. This approach is an outstanding quality feature for the constantly growing crypto community. Therefore, the Cardano project is already being traded as a foreseeable successor to Bitcoin and Ethereum.
Cardano is indeed a legitimate successor to Bitcoin and Ethereum, although due to the high number of 26 billion available coins it will probably never reach the price level of its predecessors. A medium-term exchange rate of 10 euros per coin is a realistic prediction for 2022, if the hoped-for acceptance of crypto currencies by the masses actually occurs.