There were quite a few cRPG's prior to BG1 and BG2 that used turn based combat, so I do not think it is correct to call RTwP "classic" crpg combat. RTwP was more like a chapter in the story of cRPG rather than a full volume.
Hence the quotations around "Classic"
It was used for some popular old titles and is what's used by more modern titles that attempt to be throwbacks to "Classic" CRPG's (With titles like Tyranny, Pillars of Eternity, DA:O etc)
They tend to look at the BG1/2 and NWN era where there was more RTwP and use that as their basis for their systems. Even if there was TB before and after it's usually an afterthought for their design... (PoE2 did eventually add in TB mode for example. But was initially only RTwP and PoE1 remains entirely RTwP)
