I had this and it may be that the two companies use differing methods. The bottom line may come down to a survey and an evaluation based on that. If both used the survey, conference call time.
The bottom line is you want the one that is correct, and the company with the flawed results has a little "splaining" to do.
My opinions are not necessarily my employers.
Rules and Regs minus Relationships equals Resentment and Rebellion. John Maxwell