TrueHD vs. TrueHD - Is All TrueHD Created Equal?

[Ascended_Saiyan]

I've been observing this for quite some time, but just decided to write about it now. Sony and Warner Bros. have been putting tracks in Dolby TrueHD for a good amount of time. But, I noticed something of an audio difference awhile ago (Warner titles being a little muffled at times). And, quess what? Sony's bitrates are a lot higher than Warner Bros. for ALL 48kHz 16bit tracks. That begs the following question. Is all TrueHD created equal?

Of course, we know that heavy action scenes would naturally require higher bitrates. Let's take two movies (I Am Legend and Dogma) for example. They are both 48kHz 16-bit titles. I Am Legend PEAKS at around 3Mbps. Dogma PEAKS at around 5.2Mbps! I Am Legend usually hangs around 1.2Mbps for the most part. Dogma usually hangs around 3.7Mbps. It doesn't stop there. ALL audio matched TrueHD tracks will have much higher bitrates on Sony's titles.

Now, some people say that the machine that encodes audio as TrueHD uses what is needed to be lossless. This would suggest that the machine can be changed/adjusted. If that is true, the following question needs to be answered. Is Sony needlessly boosting the audio bitrates for no reason? OR, is Warner Bros. lowering the bitrates (or altering the audio before the TrueHD machine encodes it) to the point of being lossy to add TrueHD to HD DVD titles?