Okay, I just had a complete brainstorm.
The Green Goblin we saw in Superior Spider-Man #4 was
not Norman Osborn. Norman is still in a coma. He was smuggled out of the hospital by the Green Goblin cultists (you know the one's who have Green Goblin tattoos?) who were the guards on duty watching over Osborn's bed, and did so on the order of the Green Goblin.
Nor is the Green Goblin Harry Osborn. As we saw in Amazing Spider-Man #697, Harry is in hiding (and looking like Walter White from Breaking Bad) raising his son, and has no interest in getting involved in whatever craziness that used to be his life. No reason why he would ever want to be the Green Goblin again when you take that into consideration.
No, the Green Goblin we saw in Superior Spider-Man #4 is actually Norman Osborn's other son--Gabriel Stacy. Yes,
THAT Gabriel Stacy from THAT particular story.
After all, Gabriel was personally raised and groomed by Norman to be the inheritor of Osborn's legacy. He's someone we've seen who wants to please his father and earn his love. And we did see that, during the American Son mini I believe, that Norman Osborn did get in touch with him and give him his blessing. It would be pretty easy for some of the Goblin cultist to have gotten him out of the psychiatric hospital he was staying in after that. And as a dutiful son, why wouldn't Gabriel take his father out of a hospital where he could be looked after by people who are devoted to him? And given that he was a "Goblin" before and has the same powers as Norman, stands to reason that, as Norman's son, he would don his father's costume and take on his mantle as well.
Thus, the stage is being set for a new "Gang War." In one corner, you have Gabriel Stacy as the new Green Goblin with his army of tattooed Goblin cultists, seeking to avenge Norman Osborn by taking down "Spider-Man" once and for all. And, in the other corner, you have Doc Ock as Spider-Man along with his own "Spider Squad" as we saw depicted on the upcoming cover for Superior Spider-Man #14. Thus, you have the "mother of all Spider-Man vs. Green Goblin battles" with both "Spider-Man" and "Green Goblin" being the "inheritors" of each respective legacy.
Just an idea.