Also interested in an answer on this.

Monero, Litecoin, and doggie coin all seem to scale better than BTC but I've never been able to get a clear explanation of how they do it.

Last time I asked, someone explained a cool mechanism Monero uses for managing incentives and costs, but no actual explanation of how it gets the result of beating Bitcoin.

I've also heard these other projects are lying about being able to scale better than Bitcoin, and they just appear to scale better because they're smaller. That fits with nobody telling me how they actually scale better, but it doesn't fit with the actual numbers in my view - doggie coin seems to have plenty of transactions, I'm just not quite sure how this all adds up.