I would agree with Alan, I think the Xe2 at least but probably most of Fuji system in general across all lenses is like half as fast from getting focus to the shutter taking the shot as a dslr. That said, I really don't have many missed focus shots at all, and I feel like the AF system is in general pretty darn good. I think the coolest thing about Fuji is that they truly will keep being innovative, and keep advancing things. This was shared on another forum and if anyone here has 40 min I found it to be an interesting watch.
Basically it talks about Fuji as a company and how they took market disaster (End of film) and capitalized on it by applying their technologies from film to other fields. In it though, the CEO basically flat out says that they will always make film, and they feel so strongly about photography that they consider the company to have a moral responsibility to both preserve and advance photography. It explains why a company making a ton in other areas actually has released what we all know is something substantial from a tech/user standpoint in the X cameras, and why they update firmwares etc. It is a great watch, and I really feel like they have a philanthropist approach to the photography division of their company, and they are doing it for the love and tradition and still will push and embrace technologies. Watching it really made me feel like this is not a fad small camera system for me. It made me feel like I am going to be a Fuji customer for life and I believe the X cameras that led to the new gfx, are only going to keep leasing to more X stuff and so on. Not saying they will have best af out there one day, but saying they seem like they will have more releases with real upgrades than not.