If you are gonne be a smart ass, at least get your details right first.
1 megabit per second is denoted with a lower case "b" = 1Mb/s
1 megabyte per second, which is 8 megabits per second , is denoted as 1MB/s.
Don't forget that 'mega' is denoted with a capital 'M' (otherwise it describes the metric distance unit 'metres') and that seconds are denoted with a lower case 's'.
For all intents, broadcast medium are always described in bits (Mb/s) as they are a serial transmission, whereas internal to computers, and a few other external things like parallel ports will be described in "bytes" per second as they are parallel technologies.
And exception is SATA which a serial type transmission, but is described in Bytes per second as a comparison with the parallel ata technology which preceded it.
Enough for you?
As an example ... you will find that ISP's advertise their connections in Mega Bits per second ... but you will max out in speed at less than 1/8th of their reported speed in windows, as the windows reports in bytes per second ...
Did you never wonder why your 56Kb/s dialup always maxed out around 7-8KB/s?