Agreed, themoabird, but lets clarify things:
Can't speak for others but I would not agree with the simplicity of the second statement by itself.
"All" would have to be replaced by "vast majority"
"80mpw" is no magic figure. Some folks may need more (I genuinely do not consider 80mpw to be high mileage), some folks may need strength work, speed work (yes, you heard me right) or whatever the weak link is in their chain. But most CAN get there. And lifetime mileage (or perhaps even "fitness") is the biggest factor.
And I'd happily change "3hr" to "2:30" at worst. But I am talking long term and making presumptions about well structured, intelligent training, intent and lifestyle/commitments.
Of course, I can't prove this, but neither can it be disproved - that what makes these discussions so much fun! :-D