yeah but Thing is going to be distracting Hulk, initially.
should provide ample time for Reed to slink away...
anyway, Doom and Magneto and possibly whatever remains of the rest could come up with the tech to neutralise The Hulk.
just melt down some iron and glue mixture, then 'spray' it onto The Hulk and let it cool and adhere to his body. then Magneto just sends him to the moon (while wearing a fetching pair of mufflers specially designed by Doom to overcome Hulk's thunderclap).