this is a problem with chamfer that I've seen discussed in the past. fusion isn't measuring the angle from the same surface for all the edges. it doesn't do a very good job of guessing which edge you want to measure from, and doesn't provide a way to change it manually. one way to ensure the chamfer is applied the same to all the holes would be to just do it to one hole, and circular pattern it to the others. You can actually do this with all the holes and features on this part, which generally makes sketching easier.
