Every simulator has the positive ones, and the minus ones. X-Plane maybe could have animated cockpit, Clouds, 3D Buildings etc. But, IF is the best in case of Liveries, Planes, and Graphic quality though IF doesn’t have some of X-Plane features. Not Only X-Plane, almost every simulator even don’t have great graphics like Infinite Flight did.
Remember, Mobile devices are currently growing right now (Including on RAM and memory capability). So It’s very possible for Infinite Flight to beat X-Plane, Aerofly, and FSX on Future Updates. (We can see it from A320 Updates, B787/A321/B777 revamped by adding Window lights and Cockpit lights) :)