Aldridge is a little soft but unlike Al, is truly elite on offense. Despite being a jump shooter he draws more fouls and, more importantly, has a higher TS%. The indirect benefit is he usually draws the other teams shot blocker away opening it up for all their slashers. His +/- ratings are of superstar caliber level the last three years (+9.6, +11.1, +14.4).
Truly elite is a little overblown. Him and Jefferson have practically identical per48 stats. The only two things that jump out is that Aldridge gets to the line 1.7 more times, and Jefferson averages 2.8 more rebounds.