You have nothing to base that on because Cardano doesn't even exist yet.

Despite people ragging on ETH and claiming neo, waves, or ada is better, I still am a firm believer in the ethereum platform.

The #1 reason why is that it is PROVEN to work and already is integrated into everyday crypto use.
No other platform comes even close to the widespread adoption and success of eth.
To me, that shows way more value than speculation.

The #2 reason is that there is active development on ETH to improve it.
People went bonkers when cryptokitties showed that the platform doesn't scale well.
Yeah, it was bad, and it's bad now too, but there are real life projects developing now to solve this very scalability issue.
Namely, raiden network and chainlink.
I'm pretty confident that the problems will be fixed.