In my experience AF leadership schools have not traditionally been considered equivalent in the Army or Marines. Usually Army and Marine transfer to each other but rarely does AF transfer in, except in technical courses. Maybe we just think we are tougher.
However there is hope. AR 350-1 paragraph 3-18 allows individuals to request course credit.
With your time in service, time in grade, prior AF training, and Army experience I am sure you have a good chance of achieving course credit. I would encourage you to find a list of current tasks being taught in WLC and compare that with the training you received in AF leadership school. Consider your current ability to perform those tasks. I would then try to get letters from senior members of your chain of command (Platoon Sergeant, 1SG, Commander, CSM) to support your request based on performance and observations of your performance. You may also wish to include your NCOERs. A well built packet will provide you a good shot at obtaining course credit. Add to that the time/money it would save the military and assist in reducing the queue of WLC candidates.
Based on the information you provided I think you have a good shot at getting course credit. I have seen it approved several times in my career.
3–18. Course credit