BS if its not sapphire on the one that's a reasonable size then I'm not upgrading.
Hopefully it's on both, but even if it's just on the larger one.... I don't think sapphire is going to make a difference this generation like it may in the future. Sapphire is a surface that is difficult to scratch, similar to gorilla glass. For now, this is more about Apple controlling their supply chain. Gorilla glass is the big loser in this if they lose orders from Apple.
Maybe we'll see some picky and crazy side by sides of how light reflects slightly differently or how one is not as terrible in the sun, etc. But in the grand scheme of things, the typical user won't even notice.
Granted, I would love to have sapphire just to say that I have it, but I don't think it should be a make or break feature, because there is nothing this generation that will require sapphire.
I think, eventually, (several iPhones down the line), we will finally lose the bezel and the home button, and the fingerprint scanner will be on the display itself. The home button now is made of sapphire , and some of the early rumors suggested that the fingerprint scanner would be on the display, so it makes sense to eventually evolve to it. This is a good first step to make sure they get the sapphire display part of it down before going even fancier by making it a fingerprint scanner.
But that's just me speculating as wildly as these analysts.
