im not sure, i need to check that for sure.. but all that comes up in a background check is the arrest record.. not a felony, or a conviction.. arrest only.
In order for your deferred sentence to be complete and not count as a conviction, it must be expunged upon completion of the terms of your deferral. If it's not expunged, it's still out there.
http://ezinearticles.com/?Deferred-Sentences-and-Suspended-Sentences-in-Oklahoma&id=5071273
http://www.justanswer.com/criminal-law/1df77-received-deferred-sentence-oklahoma-10-years-ago.html