How do you tell if all users will have the same frameworks you have installed on your system? For example, I have python 2.6 installed on Mac OS X 10.6. Are all frameworks the same for the same OS level?
If you didn't install anything else on your machine, all installations of MacOS 10.6 will have what you have installed with the possible exception of libraries that might come with iLife, which is preinstalled on every new Mac but is not installed if you setup your system from scratch.
There might be minor differences coming from installed patches, but those doesn't affect compability.