With all due respect, "neither" is probably the right answer.
IMO, we should keep in mind what advice we've gotten from the knowledgeable. We've been told that the "MO" of the PTO is basically to take whatever is brought to their attention or found (litigation search), write it up and throw it at the inventor to rebut. This puts the "deep thought" onus on the inventor. IMO, this is what is happening here.
Let's just hope that TPL did indeed find this before, and already has some foundation for solid rebuttal. Polish it up, meet with the examiner(s), get 'er done.
JMHO,
SGE