Blu-rays with Video Bitrate of 40 Mbps?

[Anthony P]

Originally Posted by 42041

You're oversimplifying things considerably. The only thing a high bitrate can do is accurately reproduce what's going into the encoder. Garbage in, garbage out.
In general, the difference between an average bitrate of 20MBPS and 40MBPS with a high quality AVC encoder would be subtle to most viewers.

20 seems a bit low, but I agree with the rest. 40mbps average also does not make sense, any normal film will have slow parts (little action) and simple parts (like credits at the end where a screen is mostly black and so can be very efficiently compressed with no loss) so at some point it might not make sense while the hard scenes can't be any better (i.e. hits the 40 ceiling) so they can look better but it can't affect the average by going higher.