Other than the fact that even the Sedona is 5th place in sales on both sides of the border. Yes, even the expensive Pacifica is outselling the Sedona. If you look at the Sedona in person, it's pretty dated especially with the brown interior which really doesn't look good.
part of the problem is the previous Sedona was pretty forgettable...that, and some people just won't consider a Kia product because they still think of 10 years ago...also, in many rural areas, the Big 3 (and to a lesser degree, Honda and Toyota) will be available somewhat locally...Kia, not so much.
