To understand the value of v1.0.3, one must look at the game's patch history.
Some repacks allow you to skip unnecessary files, such as credits or non-English voiceovers, to further reduce the initial download. Patch 1.03.0 Improvements Mad Max v1.0.3-Repack
The repack is actually superior to Steam versions for modding because Steam's automatic updates can break script extenders. To understand the value of v1