An interesting review by DPReview because you can’t compare the results directly to any other camera in their database and the AF performance isn’t very impressive in their test. DPReview’s results differ from other reviews that have demonstrated much better performance.
“the a99 II is the ultimate SLT. It is the SLT that should be used by any photographers that have had prior doubts about the system, as its all-round balance of features and capabilities leave the ultimate decision for many photographers up to two things: EVF vs. OVF, and the lens system. For those that love SLT, the a99 II is definitely worth a look, but for those that need a solid all-rounder, or a lens selection beyond A-mount, the complications of SLT may not be worth the advantages.”
At least the image quality hold up well. You can read their full review here.