There is no upper bound on what "web" will require of hardware. Web developers will see to that.

Text and maps worked fine a decade ago. Web, too, though it depended amd still depends a lot on the sites you use.

The issue is that it's not enough to be good enough 99% of the time. That's assumed.

It's performance in the last 1% that really makes or breaks the user experience (or maybe the right ratio is 95/5 or 80/2...).

Obviously, any car will have sufficient power and traction to maintain cruise on the highway. It's those few seconds of acceleration to pass, or that panicked emergency stop, where you'll definitely notice a difference.

I'd lower that 99% to 90-95%%; A not insignificant number of people do use the IPhone for graphics intensive games; and its graphics chips and programs are drastically ahead of android competition by most reviews.

But your point stands that 100% of hard core gamers that want the biggest fastest new thing have 0% use for the 8. (The x/ten has the bigger better screen too)