I thought about picking it up when I saw it, but then I looked it over and realized it was just for FF and Spidey... so I decided not to... I might later this week or something.
There is some differences I noticed but all I am gonna say is that Wizard write up they had awhile back on the strength levels of the Ultimate Universe are off.
For example Thing still had a 6 rating which is 75-100 tons. Wizard had him at 16 tons or something.
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"I am not afraid of the dark the dark's afraid of me"
And they stated that his strength was still unknown. Which means there is hopes for Ultimate Hulk, and Colossus, who surely should be Level 7's. I have a feeling they will keep everyone at the same level they are in the 616 H.B.
Some Estimations:
Thor Level 6
Iron Man Level 6
Colossus Level 7
Hulk Level 7
Cap Level 4
Giant Men Level 5
Other Captains Level 6
Capt Marvel Level 4/5
Juggernaught Level 7