Advanced Installer and Mac

Today I was busy with creating a BlogBridge distribution package for Mac OS X and had found that Advanced Installer supports only ZIP-packages and there’s no DMG support. Not that it distresses me, but the fact that an application bundle will look slightly different from all other native applications makes it all being a little less fun.

I don’t have Mac and I can’t judge whether it’s better to have an application in DMG or ZIP. For me DMG (Disk iMaGe) sounds like something having some additional support from OS, like automatic unpacking and applying standard installation procedures, whereas ZIP is somewhat general, which should be manually unpacked and installed.

Is that true or a ZIP-package with some specific internal structure is also handled in a special way?