Is Adderall really less addictive/divertable than Dexedrine?

This was the justification someone gave me once for the predominance of Adderall over Dexedrine. It seems like Dexedrine has less severe stimulant side-effects, which I understand is part of why it's considered to have more of an abuse liability (I think), but it does not seem—at all—to actually be abused more. It seems like patients request Adderall way more than Dexedrine based on what I hear docs say, and I feel like Dexedrine will be less likely to be diverted than... Is Adderall really less addictive/divertable than Dexedrine?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums