Well, sure, and if it's a direct clone, so be it. That said, it would be easy to allow for some uniqueness between the two lands with some relatively minor changes. For starters, if the space used is somewhat different, they might want to rearrange some buildings to make it fit better. As an example, they could put the Mater ride on the other side of the street if it fits better into that space in DHS, plus has the added bonus of being more consistent with the movie.
I do thing another way to make things more unique is to change some of the buildings. Some of them are going to be consistent, I think -- Flo's would be food, the Curios would be merchandise. But others are more flexible, we've seen suggestions like making Luigi's into an Italian restaurant (though the park doesn't really need one) or making Ramone's into a paint house attraction like they have in TDL. There was plans for a Ridemakerz store to go in DCA's Cars Land, but it was cancelled; I could see them wanting in for Florida and I think that was going to go into Sarge's. The courthouse could be made bigger and make into a store or some other use, maybe even some guest services.
I'm just saying that there's no need to be an exact clone and I think having some uniqueness (even if RSR and Mater's are the same) would help to provide some interest in both parks and create the kind of interest that we see when people compare DLR and WDW as they are apt to do.