dts 5.1 fold down to stereo better than cd?


I have an Oppo BDP-95 connected to a 2 channel system. Does anyone have an opinion on whether the dts 5.1 DVD-A version of an album folded down to stereo sounds better than the cd version of the album? Thanks in advance.
128x128tomcy6
Is it dts 5.1 or is it DVD-A? Not the same as the former is a lossy format and the latter is lossless.

Kal
Thanks Theo.

Kal, It is one of those that have the dts logo and 5.1 Music Disc in red across the top, front and back.

The label according to Amazon is Digital Sound but is has a Capitol logo on the back. Amazon calls it a DVD-A but I don't see the DVD Audio logo on it.
It is unlikely to be a DVD-A and the mixdown is, imho, unlikely to be superior to CD.
Click the "i" button on your Oppo remote and it will tell you whether the source is dts or mlp as well as the sampling. I presume you are linked to a monitor as the default layer of a DVD-A without selecting could be anything depending on the disc. Also go back thru your setup menu to be sure which 5.1 defaults you have selected.