Streamer vs. CD Transport


I have my Arcam R Play streamer and my Cyrus CD t transport both connected to a Schiit Gungnir Multibit DAC.  The streamer only has an output for a coax connector whereas the transport has provision for both coax and optical cable. Therefore, I have the coax hooking up the streamer and the optical connected to the transport.  I like the sound of both, but the SQ from the Arcam seems to be slightly superior to the SQ of the Cyrus.
My question is, is this due to the inherent superiority of coax technology over optical technology?
Or, is streaming better sounding than CDs?
128x128rvpiano
I got the Arcam streamer because of a review favorably comparing it to the Bluesound.
 Just did a listen test on the same 44.1 CD files, both from an HDD and from an SSD. Both to the same DAC and to my system. The SSD is an NVME one and there is no SATA bus at all.

 No comparison at all. The SSD trounces the HDD is so many areas its not a fair contest. Now imagine how much worse your transport sounds. ;)
LOL. Now I have a real problem. I have created a RAM Disk in my RAM and put the same 44.1 files I have on my SSD and HDD on it. Its noticeably better than my SSD. Not as much as from HDD to SSD, but better.

 Oh well I'll have to write some code to take care of this problem. ;)