Mel Gibson Settlement -- HUGE Loss for Oksana

The settlement struck between Mel Gibson and Oksana Grigorieva is nothing less than a financial fiasco for a woman who wanted untold millions of dollars from her famous ex.

TMZ obtained a copy of the original 2010 settlement worth $15 million that Oksana disavowed. At the time, Oksana said she would not go through with the settlement because she felt Mel was a danger to their daughter Lucia and believed Mel should not have unsupervised contact with the child.

In reality, sources connected to the case tell TMZ, the real reason Oksana walked away from the settlement is because she was advised she could get a lot more than $15 million because of the alleged physical abuse she claims she suffered at the hands of Mel.

Now, in a shocking twist of fate, rather than getting $15 million, Oksana is only getting $750k. On top of that, she was concerned about Mel having unsupervised visitation ... Mel is actually getting MORE unsupervised visitation based on the agreement that was just struck.

The fact is, under the 2010 agreement, Mel would NOT have gotten 50/50 custody until Lucia turns 3 years old. Under the current agreement, he gets 50/50 custody immediately.

Short story ... she should have taken door #1.