Spectre at full power, to me, means he has given a driect order from The Presence. If that is truly the case, he will given just the amount of ammo he needs from the Presence to take them all down.
The Marvel team loses-end of story.
For those who disagree, this same thread may as well be written: Marvel Team vs The Presence.
I think that Thanos stoping the Hunger Being who had destroyed 1000s of other Universe's and the other SuperHuman Intelligent beings could come up with a plain to beat Spectre.I mean if Batman can beat Darkseid with a little prep and most of the beings are atleast 100times smarter then him they have a chance.
(Hunger is an inter-dimensional parasite: Once Hunger enters a dimension, he begins to absorb it and consume that reality. Essentially, Hunger eats realities. He absorbs that reality until he is all in that dimension and encompasses it. Then he finds a new dimension and begins to transfer himself into that one, absorbing it as well. When first entering a dimension, Hunger is temporarily vulnerable to extreme physical and energy attacks, but almost instantaneously adapts to whatever force is being applied to it and begins to absorb that force as well. Hunger also has formidable mental faculties, able to mentally influence even cosmic entities such as Galactus from a reality away. Hunger also taught itself how to speak 106 of the languages of the dimension of Earth 616. Hunger is able to breach parallel dimensions effortlessly, the way we walk from one room to another, but has great difficulty breaching "spherical" realities. In order to breach a "spherical" reality, there must be an opening on both sides of the dimensional barrier)