I will have to respectfully disagree about cannabis being physically addictive, having spent countless hours researching it and from my own experience, though I don't doubt many have fucked up their lives because of cannabis.
I have been enjoying old school skunk gentetis at home. It's great. No more potent than what I generally have however.
I am sure if you spoke to your grower mates about it they will explain.... A longer flowering pure Sativa strain like a Jack Herer would probably feel stronger to most but not many will grow it for commercial reasons. 12-13 week flower time for something like that whereas skunk will finish in 8 weeks. They sell for the same $ so think about it.
I'm sorry but when you suggest to me to do more research on cannabis, it kinda feels like a JW telling an apostate they need to research the religion more.