I went back and watched Vic's review of the MVP 4. He did his typical TC test and said that it was better than most but not at the same level as a DNA or YiHi device. His exact words were "It's just fine" in that great Scottish accent.
I'll check out some more opinions of the MVP's TC function and if nothing else I'll have to get a new mod! Oh, and that will be a Shinyitis approved purchase. I will after all "need" a mod that does proper TC.