I don't know but to me and most people commenting (youtube), they both sound really good...Not sure what is what, I don't see any labels.
FWIW, what I listened to sounded a bit fizzy. Which is surprising from a MkIV.
If I have them figured out right, the Torpedo has a bit more fizz but also has a nice grind to it. Suhr is warmer sounding. My favorite part of the vid is toward the end where you did the SOD riff for the second time.I don't know but to me and most people commenting (youtube), they both sound really good...