Yep. I bet there are TONS of stories like that. Seriously, people went from 70-80 in 3 days. That is Nonstop playing for 3 days. To get to 71 it takes 1.5mil exp. Probably takes around 10-25mil to get to 80 from 70.
I got to 71 and felt like I played too much. I'm so busy with school work/job that I dont have much time. We have one 80 in my guild, one 79, and one 78 last I checked. Most people are 71-75, which i still think is ridiculously fast.