iPhone 4 - 326ppi
iPhone 3GS - 163ppi
Nokia N900 - 267ppi
Nokia N810 - 225ppi
Google Nexus One - 252ppi
Samsung Galaxy S - ~202ppi

What I'm going for is that the ppi is lower than the N810 for the Samsung Galaxy S. It doesn't mean that it's not a pretty display, not at all. But I think by now, what's going around and around is the fact perceived clarity is up to the eye(s) of the beholder.

What was misunderstood is that I really don't want to buy any phone before touching it. I never have liked it and have done that only with my Nokia N810. Nothing before, nothing after.