Comparing bitrate doesn't give a fair 'picture' these days.

Modern codecs can do more packaged into less.

You can get compressed but technically lossless etc, whilst a HD video at top spec DVD bitrate (e.g. 7000 to 8000 kbps) might look very very good depending on the codec.

it's worth remembering that these things keep getting better so adequate support for new formats is pretty useful.