I haven't yet update to Max 7.0.1, so maybe this is different, but in Max 7 standalone apps are GIGANTIC. My simple, MIDI and java only patch suddenly became a 330MB application. Upon further inspection, the standalone contained every .mxo in the search path, including everything for jitter, everything for MSP, etc. The Chromium Embedded Framework is a whopping 142MB, and I'm not sure what it does (though removing it will make the Finder throw a 'this application is damaged' error). It included all the 'extensions' in the extensions folder, even though I thought I'd told it not to via the [standalone] object. It seems to include all the picts, all the SVG interfaces, basically it includes EVERYTHING, and I've no idea why. IIRC, on Max 6 it would parse through a patcher and only include externals that were in use in the patcher.
This is on OSX 10.9.5. So, what's the reasoning behind generating these massive standalone apps?