Sues shield is not psionic, all of sues powers come from Hyperspace, which is not only the same energy source that the Celestials use, but is also the source of all energies for the entire marvel omniverse as a whole.
So what about jean grey? What exactly is her force field constructed of? How exactly is she able to make a force field of telekinesis?
Think of it this way:
You can stop or slow down objects in motion but that depends on how powerful your telekinesis is you may stop lets say an arrow but not a bullet but you can definetely slow it down or maybe you can stop a speeding car (For example the 2013 remake of Carrie) and such.