Not all Xbox 360 ISOs are equal. Here's what separates a from a broken or stripped-down copy:
You can find full sets (every game released in a region) rather than just popular titles. Download Speeds: xbox 360 roms archive high quality
Ensuring that digital-only titles (like XBLA games) are preserved in their cleanest, unmodified forms. Not all Xbox 360 ISOs are equal
This is the format used by the official Xbox Live store. It's often preferred for modified consoles (RGH/JTAG). Where the Archive Lives xbox 360 roms archive high quality
These are unpacked game files. They are smaller and easier to run on emulators like Xenia.