Aygo
Rock n' Roll Doggie
How many people do you know who can name one song off ATYCLB other than Beautiful Day? How many off Achtung or Joshua Tree?
In fact, many people can name Elevation, Walk On, and others at least recognize Stuck In A Moment when heard.
From Achtung Baby? Probaby those people can name One and Mysterious Ways, and the other singles are only recognizable. The same happens with JT: they will name Still Haven't Found, With Or Without You, and probably Streets, but not God's Country or Bullet The Blue Sky.
ATYCLB and HTDAAB have been considered 2 of U2's best albums, and the press have hailed them, they have been included in the list of best albums from this decade in several music books, lists or other. So, that concept about considering what a masterpiece is, that's very relative...