Well, I made a mistake. As some of you know, under carriage got their cycle life (independent of the airframe).Anyway, the under carriage is one thing, the rest of the aircraft is an other...
So these 30.000 or 60.000 or 80.000 or whatever cycles are about the airframe of the aircraft. What is worn the airframe is not so much the landing but the cabin pressure during flight. Delta pressure varie with aircraft type, is generaly near 8,6psi.
As you understand, more the aircraft fly high, more the delta pressure is high too! It means a regional aircraft will be less affected by delta pressure.
Hope this help!
Seb.