In an article by Salaam Corniche in academia.edu, he/she complies Mutiple studies saying that 25% of all Muslim Christian converts received a vision of Jesus. I want to know if her/his states are genuine/accurate (like if she/he used the proper scientific method in the survey) and if there are what can explain that phenomenon.
Also, I want to know if there is any information that can contradict or oppose the stats. 

Article: https://www.academia.edu/40350218/Why_do_Muslims_come_to_Christ_Five_case_studies_that_underline_the_key_factors_as_Living_God_in_Christ_the_living_Word_and_the_living_Body_of_Christ_hrist