So juggernaut is really sick and tired of getting battle field removed all the time. he is sitting inside of a volcano after the thousand time he got bfr'd, this time into a volcano, and he really let it get into his mind. he became obsessed with battle field removings and now all he does in a fight is trying to bfr his opponent as some psychological answer to his entire career of getting that treatment. here is a list of characters. can juggernaut bfr them before they bfr him.
I think the key is what you yourself said in the OP ..."can Juggernaut BFR them before they BFR him."
Whether or not he can lift Galactus does not matter simply because, based on your stipulation, Galactus would BfR him before Juggernaut could come close to doing anything close.