I mean, handwaving how, (maybe Charlie dies from ptomaine poisoning the week before, it was the middle ages after all) you could potentially see a Muslim Aquitania, at least for a while and maybe even a longer term independent Muslim kingdom. But Christian Europe was (even then) not in such a state that a single battle was all that was between it and disintegration.
Losing Constantinople would have a much larger effect on Christendom.
NB - as for it just being a raid, wasn't that the case of Spain also?