At 5'11 and 175lb, I'd say I'm fairly average in build and comfortable up to the 70 ft/lb mark according to the chart, however I must say that poor stock design and high volume of shots seems to take more of a toll than the sheer ft/lbs of recoil energy.
When I was practicing with .470 Nitro Express (a roughly 11lb Merkel double rifle) for a bear hunt, I'd fire at most 4-5 rounds per day, and even that became taxing at the end of a week or two. 200 rounds through the my old .308 semi auto with a steel buttplate offered about the same level of discomfort the next day.
As far as immediate ouch-that-hurt-factor though, an 18-pellet load of 00 Buckshot through my 7-ish pound 3.5" 12ga still seems to have hurt more, but I'd have to shoot them side by side to really compare it... and I have no plans to do so anytime soon.
I'll second the previous point made about the big .50's- the recoil isn't bad at all, but the muzzle blast is downright ignorant.