In your screenshot, for what you are "pointing to", it is only the size of the "Video" stream. Go down to the Audio portion, take that "File Size" and add to the Video File Size.
Presto! They should now "Equal" the file size in the "General" section.
Unfortunately, it is a bit more complicated. The selected example actually only shows the minor problem that the usual unit of measurement MBit / s is not used. The bigger problem is that the video data rate is displayed differently, depending on whether a file is opened with so4compoundplug.dll or compoundplug.dll. If it is decoded with so4 .., the values correspond to the bit rate, but with the wrong unit. The examples are from VP17.