Fight me: Single-core performance is still much more important than multi-core performance for most things you do on a phone, including web browsing.
I get down voted every time I say that. Single core performance will always be the best indicator of how fast the phone is IRL. Any application that is basically a wrapper around a javascript heavy web app is going to run like ass on a phone that has a low single core performance even if the phone has great multicore performance.
I still don't get why this question seems to be almost political.