You and I see the Battle of Gettysburg the same way.
Its my belief had Jackson survived, he would have gotten his troops wiped out attempting to take Cemetary Ridge or Culps Hill in the late afternoon/early evening of July 1st.
Thats if he moved as he did at Chancellorsville. If he went into a lethargic mode, as he did in the Pennisula campaign....or a couple of other times our Southern friend don’t like to mention, let alone discuss....
Jackson's survival would have changed history because, well, Jackson would have been alive. Ewell and Hill would have been commanding their divisions.
It's just my opinion, but I don't think you can just stick Jackson into the those three days and think they would have played out the same.
I'll be happy to discuss the Seven Days Campaign and the toll the Valley campaign played on Jackson's health and energy. I will be happy to discuss too complicated plans, brigade leaders disobeying orders, poor staff work at Lee's headquarters, poor maps, the the extreme emergency Lee found himself under when he took command from Johnston.
I don't know when the other times would be when Jackson failed, but let me know, and I'll be happy to discuss it with you too.