in your opinion which blockchain could beat the Ethereum ... and why 
?
I don't think there is another blockchain that can beat ethereum in our days now but maybe there are something may come but in the future . ?so the thing here is that Ethereum will continue dominating the blockchain technology of altcoins ,
and this is the reason why Until now ETH is the dominance in altcoin world always second to Bitcoin the supreme currency .
The true Ethereum Killer will be a quantum computer safe blockchain 
But when will this be coming ? and looks like it is getting late for the party lol.