The Wizards (had a ‘96 MC, still have a 2016 MTL) are definitely punchier, harder hitting amps (hard to beat Wizards there) and also sounded bigger, more open, but I’ve got plenty of other amps that sound even bigger than my Wizard. The 2 Gower’s I’ve had (Rockmonster & KK++) had more growl, warmth, better mids, more compression, gain, juicier, easier to play feel, not as hard texture to the notes like Wizards. IMO very different strengths and weakness in wizards vs Gower’s (or other modded Marshall’s in general)
Honestly, I felt the Cameron modded Marshall’s I had at the time were just better in every way so I sold the Gower’s after those AB comparisons, but I also sold all the Cameron mods I had because of other stuff I got later on. Just have still a CCV for Cameron stuff