I took a closer look at these two coins and realized that there is only an idea behind these coins and that the implementation is still a long way off.

I don't believe you did! Cardano is a live blockchain on the open, hostile Internet, which has been successfully protecting over $20 billion in value. It's native ADA token lives there, and is accessed by its native wallet, Daedalus, which you can download and use. A look at their Github account, which is linked to from their homepage that you claim to have read, reveals they have been very active for over a year, building this project from scratch as they relentlessly march along their roadmap. While providing constant updates about their progress.

None of these things exist for TRON however. TRON appears to be just a whitepaper and a lot of nice words.