Apple's dfont is not Type 1, but TrueType.
Any suggestions of compatibility Adobe makes regarding Type 1 and OpenType CFF versions of the "same" font apply solely to the Type 1 versions of fonts previously sold by Adobe. Adobe has neither tested nor can make any assumptions about the degree of compatibility between Apple's dfonts and Adobe's OpenType CFF fonts.
Even with Type 1 to OpenType, Adobe does *not* guarantee identical text flow. See my blog post for more details: http://blogs.adobe.com/typblography/2005/12/type_1_to_opent.html
That being said, there are two things to note:
1) For fonts that Apple has been shipping since the 90s, such as Helvetica, Times, Courier and Palatino, there are reasons to think they were trying to be compatible with the previous Type 1 fonts. No guarantees, but odds are good.
2) For fonts that Apple added with OS X and later, if they have the same trademarked name as fonts Adobe ships, the odds are pretty good they were both licensed from the same source, and they have a fair chance of having compatible metrics for text setting. But again, no promises.
Regards,
T