Schnuck Markets says data breach exposed 2.4 million credit and debit cards used by customers at 79 stores. Schnucks says damages in the case far exceed the $5 million threshold for a federal case. Data breach lawsuits such as the one filed against Schnucks have also not tended to fare very well in federal courts, an attorney says. The downside to Schnucks’ effort to move the case to federal court is that it is admitting that potential damages against it could be tens of millions of dollars.”]