But yeah, we can't easily extrapolate date from this one particular poll and compare/contrast based upon 2012 exit polls, but regardless of how one chooses to slice and dice, these numbers don't look at all good for Trump unless there are a ton of urban/suburban voters based upon area codes/ zip codes/ self-ID or what have you that fall into a "rural" category considering that over 80% of Americans live in urban/suburban areas by any measure whatsoever.
But why does it matter? What really matters is the topline number, much moreso than how he's doing with this or that demo. Unless you can really use the crosstabs to cast doubt on the topline number, but I don't see how you can do that with urban/suburban/rural when we don't know how they're defined in this poll. If you want to cast doubt on the topline number, then use one of the other crosstabs, where the definition is more clear.