Originally posted by WolvesofBabylon
Whether her power is equal to the IG is not important. The IG is useless until the user does something with it and as others have stated she has a much quicker reaction time and with her powers easily erases Thanos.
Jean hasn't erased someone as physically durable as Thanos; not saying she can't erase him, but rather that I wouldn't expect her just snapping him out like she did the fake skrulls.
All Thanos has to do is snap. Jean doesn't even know how the IG works nor what are it's capabilities. Will she even attempt to stop Thanos' snap?