Spiderman could attach webbing to Wolverine and swing him around like a mace. very likely to tag Grey Hulk with the adamantium claws.
or Spiderman could make a slingshot out of webbing and fire Wolverine at Hulk.
can the Grey Hulk make the earth quake by slamming his fists into the ground? if so, he might be able to occasionally knock them off balance and then grab them.
6/10 to Grey Hulk but it's close.