but if the phone is faster today, apps will start building features to use that CPU today. when the next phone comes out with a faster processor, you're still going to be behind the curve.
maybe less relevant in android, where phones generally have a wide spread of capabilities. but in iphone land, where most people are on the two most recent generations, you're always going to find developers assuming you have more processing power than you actually do if you're not on the latest generation.