the 10 years later Epilogue in Z implied Gohan and Videl waited a little while before they got married and had Pan 5 years after the Buu Saga
Super starts off a few months after the Buu Saga and he and Videl are already married and she's already 9 months Pregnant
in GT Trunks is 17, and Pan is 10, but in the 10 years later epilogue Trunks is 18 and Pan is 5
Super may consider GT canon