I took the same size on Rezso's recommendation. They fit very similarly, but with the P2 being slightly wider, and less elongated.
It's certainly a broad last. This isn't necessarily a bad thing - I have a pair of Alden shell captoes on the Barrie last and like the solid chunky look. But if that's not the look you're after, the 3636 may not be the last for you.
Lasts aren't inherently good or bad, better or best. It's primarily about what fits your foot, and secondarily about what fits your eye. What works for someone else may not work for you in either respect.
I would think that for larger sizes, blobbiness is less of an issue. For sizes larger than perhaps US10, I would just concentrate on whether the last suits the chosen design/style & colour of the shoes.