Absolutely! That's one of the reasons I really consider Wings to only be an introduction-to-modeling type of program. It's darn near impossible to get a good poly flow inside of Wings for anything even remotely "soft" like cloth. The topology makes a huge difference in posing; you can see it all over the place just in any shirt that does not bend well when the arms are raised or lowered, for instance. So it makes perfect sense to me, that if the topology doesn't allow for good deforming during posing, that it absolutely would suffer badly during morphing.