Rewriting and posting a couple of past comments on the topic >
One thing you learn quickly in law school is that you win cases not on the law but on facts, or rather your characterization of the facts. A good lawyer presenting facts in a way that they get through to a carefully selected jury can win almost any case that's based on a legally plausible claim.
Also, Google will most likely offer a huge settlement just to avoid the negative publicity and embarrassing disclosures that come out during the discovery process (which in many cases may show further tortious conduct towards third parties and expose the company to further liability). The case doesn't need to be strong, rather just painful enough for Google to defend. Every suit has some nuisance value.