My mistake.The voicing between the two amps is different, has nothing to do with the tube, it’s the basic architecture.
I have used the tube vs solid state as the tone/response difference between the WD, TT vs the Ds.
As I've heard the new Mesa tube variants are more "squishy," "midrangey," or exhibited some kind of "latency" in comparison with the Ds, 350, 800, and 800+ being "quicker" or less "squishy". And some attribute that to the tube in the mix.
I don't know as I only have the WD.
