Hi,
Cardano is still very young. For the moment they even don't have a linux client and there is no date for this at the moment. For me the linux client is very important for security reason. All major crypto have a linux client.
The daedalus wallet is some kind of core wallet like bitcoin core for BTC, meaning you have to download the full blockchain to have Daedalus functionnal on your Windows and your wallet working.
They published a roadmap which created a pump in the market but that's only a roadmap with nothing concrete and real behind at the moment.
Charles Hoskinson, the Cardano leader, says that Cardano is third generation crypto currency with lots of promises, but for the moment they even do not know how they will handfle the SMART CONTRACT things.
I'm new to this but i had a quick look on ETHEREUM and there are much more resources, devs, things available on the net for Ethereum. Ethereum is so much advanced compared to Cardano, nothing to compare.
So saying Cardano will be next Ethereum is stupid at this time.
Also, Charles Hoskinson was working at Ethereum, but he was fired for whatever reason, then he went to Ethereum Classic team which explains why Cardano is linked to ETC now.
Also I found on their website that they were already working on the project on 2015, but at that time Ch. Hoskinson was at Ethereum, so this is strange fro me.
I think they are very good at marketing, but there is nothing concrete at the moment, they have to deliver...