different partitions with METIS shipped with either ParMETIS or standalone METIS


The partitions produced with the sequential metis functions are different if I use either the files shipped with ParMETIS or the standalone METIS version.

Is there a difference in quality between them? Any other aspect worth mentioning and that should justify using one over the other? I notice that the code is different on a number of places...

Thank you in advance and regards,