Even though they removed that link, you can still find the supporting statistics and studies out there widely.

In the papers, studies and news stories that I've read, marijuana smoke was indeed found to contain more tar and carcinogens than cigarette smoke. Yet it wasn't associated with an increased risk of lung cancer--or of head or neck cancer, either. The reason why not? The THC and cannabadiol (and other cannabinoids, most likely, too) have a remarkable cancer-suppressing ability that keeps the risk for those cancers at a much lower rate.

This all doesn't yet mean that smoking weed is good. It is still not great for people's lungs to smoke, and there are strong indications it's not beneficial, especially soon after smoking, for heart health or oxygen levels. But THC and the other cannabinoids have really promising powers that need to be further explored and exploited.