There are a couple of technologies where it matters. Going from memory, one that gives you a bonus for different resources and one where you get a bonus for multiples of the same type. But most of the time, it doesn't matter.
Chris is correct, the resources are equivalent, really just a reflection of the planet type they come from.
I could have made them all generic resources, but then I'd be fielding questions as to why Advanced planets make the same stuff as Metallic planets!