I just heard Justin Sun announce that "TRON 4.0 is coming", maybe this is his answer for ETH 2.0 
As Ethereum strives to be a "world computer," TRON also aims to accomplish this feat, but focuses more on decentralized entertainment.
Perhaps the basis for Sun to believe that TRON overtakes ETH in the Daaps market is that TRON has more blocks and transactions, is fast growing and has many use cases, as well as a proven record of proofing. Browser.
Since you are comparing the market capital between the two coins then Tron will take a very long time to even reach the level of valuation ETH touched and with that in mind you really cannot even compare the two, i have not dissected the technical aspects of Tron but it all depends upon how the network will mange if there are huge number of transactions taking place and if they can overcome those bottle necks then you can call them the future, until then there is nothing overtaking ETH 2.0.As Ethereum strives to be a "world computer," TRON also aims to accomplish this feat, but focuses more on decentralized entertainment.
Perhaps the basis for Sun to believe that TRON overtakes ETH in the Daaps market is that TRON has more blocks and transactions, is fast growing and has many use cases, as well as a proven record of proofing. Browser.