Oh, they were real. You could smoke a regular thai stick because you could find them easily enough but when you got ahold of one of the opiated ones, life was so sweet.
Oh they were not. All you're pointing to is differing quality, that's it. Cannabinoids and opiates don't go together well at all. I remember well my friend in Bangkok who had been a regular stoner but once he fell into being a junkie there he lost all interest in ganja. I've tried mixing them too and they weren't complimentary to me either. And as said here many times, it would be impossible to blend them efficiently AND still have nice smoking weed, it would have been costly to do with no added upside to the producer, much stronger legal penalties, the potential to turn many weed smokers into opiate addicts and on and on.