Do you agree performance GAP refers to Training and Non-training actions?

The difference between the current situation and the intended situation. Performance gap analysis helps a business identify how far it has come toward reaching its goals and how far it still needs to go to attain them, with the objective of developing a concrete strategy to close any existing gap.

Yes training action.

Yes, in some cases, but depends on the development of all management and training needs

Yes, mostly training         .