My fault, I thought the figures in the article were kilobytes (and even then, I suppose it's just a single order of magnitude in base-10!). I don't think this mistake affects my point.
The universal convention is: b = bits, B = bytes. I see errors only rarely, and they’re almost always when people write Mb or Gb instead of MB or GB (just MB, not MB per second or such). It also fascinates me how we conventionally write Mbps (with a p), but MB/s (with a /).