Yes, as much as I very strongly prefer RTwP over TB combat, I don't associated either of them with a game being a cRPG. Same thing with the game's perspective: iso versus first/third person. But I do think the game being primarily single-player is a cRPG thing. The game can have MP as a secondary add-on, but the SP experience must be at its core. I also believe cRPGs don't care about fancy graphics or voice-acting.