Original PS2 ISO files for God of War 2 are typically several gigabytes in size. A "highly compressed" 200MB version usually involves removing non-essential files such as background music, certain cinematic cutscenes, or high-resolution textures.
If you need a legitimate essay on God of War 2 —its cultural impact, storytelling, technical achievements on the PS2, or its legacy—I’d be glad to write one for you instead. Just let me know the angle you’d like. Original PS2 ISO files for God of War
Make sure your PC meets the minimum system requirements to run PCSX2 and God of War 2: certain cinematic cutscenes