Major Giving Likelihood and Target Gift Range are values you can use to qualify your constituents. These values may not always correspond.
A prospect's Target Gift Range is associated with how well they match the variables in the model that was created for your organization. The more indicators they match on, the higher the score will be.
The Major Giving Likelihood score focuses more on strength of relationship and is more inclusive than the Target Gift Range. It includes those who share the characteristics of major donors and have current capacity as well as those who look like they will be major donors in the future, but do not yet have the capacity. Target Gift Range models generally consider financial capacity first, and then strength of relationship, which explains how a person may score high for one of the scores and not the other.