User blog comment:Kogath/Monster Hunter X Discussion/@comment-5716529-20151114193326/@comment-27120688-20151114223214

The only thing I'll make note about the data size is that MH4 and MH4U both had crazy cinematic cutscenes that take up a crap ton of data space. This game already has surpassed MH4 in terms of content, yet has a similar download size to it and MH3G, the reason is probably because MHX does NOT have the same cinematic style cutscenes the last 2 games did. The gb size does not confirm any amount of content in the game. Optimization could have also played a part as well, and the game is of smaller size because they figured out how to.