A nuclear deterrent only works if both sides have nukes. Google is a pretty young company, with few patents. Oracle is a much older company, that bought many old companies along the way. Oracle's patent portfolio vastly outstrips that of Google.
We currently have enough nukes to destroy the world many times over. If you take the comparison between patents and nukes to its logical conclusion, the same probably holds. Google vs. Oracle == mutually assured destruction, regardless of how much bigger Oracle's portfolio is.