WizarDru said:The difference is that it appears (and I won't claim that I know for sure either way, being no FR expert) that FR is super-saturated with magic occurences, items, equipment and characters far in excess of Greyhawk and some other settings. That isn't a problem, but some folks find it unappealing.
And it's also a function of how much development went into FR over the years as opposed to Greyhawk. Take a look at the first FR box set, and it's also a world filled with some incredible characters and items, but for the most part, it's a blank slate. There was certainly no Volo around to tell everyone about the level and inventory of every shopkeeper from Waterdeep to Thay. FR became the most popular setting, and Greyhawk didn't. Therefore, more time and effort went into developing one over the other. I think it's pretty safe to say that if Greyhawk had been equal in popularity as FR, we would've seen much of the same move towards the fantastic as we see in FR.