yes, that statement is all the OP needs to know. optical does not have the bandwidth for the newest codecs
why are you trying to argue this with me?
Perhaps the single most confusing aspect of HDMI 1.3 is its support for high-resolution audio formats such as Dolby Digital Plus, Dolby TrueHD, and DTS-HD, all of which require more bandwidth (and copy protection) than can be transmitted over the old digital coaxial or Toslink optical audio connections that were sufficient for Standard-Def DVD. If using one of those cable types, the HD DVD or Blu-ray player will downconvert the DD+, TrueHD, or DTS-HD signal to standard Dolby Digital or DTS quality. In order to benefit from the full high-resolution quality of these formats, the player must be connected by either HDMI or multi-channel analog. For the purposes of this article, we're obviously going to focus on the HDMI transmission method.
now, stop trying to argue when you dont know what your talking about