The semantics of this drives me crazy. Achtung Baby and Zooropa were mastered by Arnie Acosta in 1991 and 1993, respectively. If both of these titles underwent "Mastering Directed by The Edge" again in 2011, then they are, by definition, REmastered.
But yes, I know they weren't marketed this way. I guess the important thing is that the remastering for AB and Zooropa was done to a much smaller degree than it was for the earlier titles in the reissue series.