my very limited take on which L2 is superior right now... Matic & it isn't even close. 

I can buy Matic on a dex without having to switch chains.

speaking of, switching chains to transact (as minor as it may seem) is a huge switching cost & I don't know how many people realize this.

I'm UX 1st, take it fwiw.

Evangelizing Incentives That Combine Self Interest With Collective Benefit & A Few Other Things I'm Still Trying To Figure Out

Matic got out of the gate faster and has some big partnerships lined up but I think we are going to see OP and zK catch up and possibly surpass.