Breslov has a wide appeal to people because people are looking for a real tzadik. and this list of people includes me.The problem seems to be what is called in Breslov "mefursamim of sheker" (leaders that are considered to be tzadikm but are not).

The main thing that I think people find in Breslov is emotional appeal [power].  That is it is not just they are looking for a tzadik but they find some kind of inspiration.. I mean if you are like me you want a unified clear idea of Torah. Now you could just as well go to the Rambam's Guide for the Perplexed for this reason. But the Guide has a bit too much medieval science in it to be compelling.

I might mention that leaders of Breslov tend to be unfamiliar with traditional Jewish writing. [Like The Guide for the Perplexed of Maimonides or the Emunot VeDeot of Saadia Geon.]