9/10 for compression efficiency. 10/10 for preserving a AAA title for offline archival.
CorePack was a well-known group in the "repack" community, similar to FitGirl or DODI. Their goal was to take massive AAA games—often 40GB to 60GB—and compress them into much smaller installers (sometimes half the original size). callofdutyadvancedwarfarerepackbycorepack