User blog comment:FairyRaven/Fairy Tail Chapter 357: The Nine Demon Gates, Review and Commentary/@comment-4933386-20131027140410/@comment-7418318-20131027144407

Depends. If it's only the "last six" not necessarily.

If the numbers five through ten are around Jose's or pre-timeskip Jura's level I doubt they'll be able to overcome one of the Nine Gates in single battle. Even the current Jura might have a difficult time with that.

And there are only six of the "none-god" wizard saints while there are nine Demons