Yeah that's better to understand that way.
HMM says in the report
† Percentage of Overall Disc Sales in a 3D format; 3D is considered a Blu-ray version and is also part of the BD Share for each title.
So its :
40.37% of OD was 2D Blu-ray
18.45% of OD was 3D Blu-ray
58.82% of OD was Blu-ray
41.18% of OD was DVD
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