Muslims are overly affected by sights and wonders over solid theology. My expectation is that they would quickly fall in line if they saw supposed miracles and would even reject the Quran to somebody displaying miraculous power.
I discuss theology all the time with Muslims on Facebook and they always reference earthly wonders as reason as to why we should follow the Quran.
As a side note, there are intellectual Muslims who, as individuals, might represent exceptions to the above hysterical reaction. But they are a tiny minority.