Oooo, this is tough question. I LOVED AKL. We went and spent a half day just wandering around, eating at Boma, and generally checking the place out last week. I fell so in love that I vowed that I would stay there next trip. The theming and architecture is fabulous. The animals are an after thought in that you can see them, but its not right in your face. I loved the pool and the way tere were nooks and shrub buffer from the pool to the lounging areas. I loved the library and firepit areas inside the lodge and the outdoor lounge areas outside. The walks were gorgeous and the staff were so helpful.
Now the WL we visited last year and I have to say that it is not as relaxing, however, I really like the look of the lodge, the location - both the boat ride to MK and the walk to FtW, and I really like the restaurants too. I like the pool a lot and the views from the rooms to me is better than AKL because I like the woods view better than barren "savannah".
You can generally get a better deal at AKL so that will probably be where we end up staying, but I don't think I can pick one over the other.