www.makemkv.com

It's probably displaying the bit rate including the container overheads, which may include unused audio tracks, etc.

The entire ethos of MakeMKV is to preserve the tracks without and losses incurred at all. That's also one of the reasons it is so fast compared to something like Handbrake, which takes massive processing power to re-encode the tracks to a lower bit rate.

This post is a straight up copy and paste of an earlier post here:
http://www.makemkv.com/forum2/viewtopic.php?f=1&t=4458

martin86 is what's known as a "me too" spammer; so called because they post a series of seemingly harmless posts where they agree with people, then they add spam to their signature when they get to 100 posts or so.

Please ignore him until the mods can delete his account.