honestly i dont totally understand about ziliqa but if compared with ADA which is show impressive performance in this year, personally i am prefer Cardano as my investment portofolio. Cardano was strong coin in crypto market now and also they will launched smart contract platform which is most waited by community. this smart contract hopefully could compete with another platform that easly exist in crypto market.
Zilliqa doesn't have any news that can make it big in the crypto space, so if we take the percentage between Zilliqa and Cardano, there are still more people who choose Cardano at this time, because they know more about Cardano through the news and developments of Cardano that are notified by the Cardano community.