Board Thread:Questions and Answers/@comment-38524365-20190601201755/@comment-24053170-20190601202135

Omnificience is simply creating anything without limits from nothingness.

Meta Summoning is simply summoning and controlling anything you wish.

Also, summoned objects and beings already existed before and were not created by the summoner.

Summoners don't create things, they simply bring forth (or call) on things/beings that already existed.

So yes, there is a huge difference between the two powers.