Yes you get less hits from a bowl through a bong than you do through a pipe but essentually its the same amount of smoke and thc intake. Which brings me to my next point, the link u posted had nothing to do with losing thc it only talked about the amount of tar. I am sorry i meant that joints wasted more smoke than a bong. And i have also heard that the faster you get the thc in your system the higher you get but im not sure.