For anyone who thinks they have the Marvel/Uni contract 100% figured out and thinks they know what's allowed where, look at the movie side. You have Marvel and Fox using the same character, played by different people in different movies. Some stuff is obviously off-limits, but there's a whole lot of grey area.
I actually don't think Uni would challenge something unless it was very blatant or a big E-ticket. IMO, the uncertainty probably helps them keep Disney at bay regarding some characters who might be "on the line", so to speak. If a judge starts defining some of the ambiguities in the contract (like what a "substantial part" means), Uni could actually lose ground.
Just ... NO!