At the risk of boring lots of folks, I will repeat my parable about my TS-808 clone and my change in guitars. For years, my principal guitar was my Epi Coronet, with hotter home-made pickups, and an on-board preamp with a gain of around 3-4. I was looking forward to my TS-808 clone being finished, and when I plugged in, I absolutely hated the pedal. It just sounded awful, but I kept it anyways. Later that year, I bought a Tele clone with "normal" pickups and no added boost. Plugging into the TS, it sounded MUCH better, and conformed to everything I had heard. The difference was the signal being fed to it. It "wants" a modest signal, not a hot one.
Though not entirely the same, the MT10 is also one of these "can you just heat it up a bit" pedals which may, or may not, rely on a particularly type of input level to sound its best. That's not an excuse, but a reason to be a little flexible in our collective evaluation of it.