Who's on first?

A confusing set of reports regarding a group of disputed Frida Kahlo works.  The LAT's Christopher Knight says "a Mexican court has ruled that opponents have failed to prove their claim that the collection is bogus" (my emphasis).  But the New York Times says "the Mexican attorney general’s office has declined to bring charges against" the two art dealers who own the collection (again my emphasis).  Obviously, prosecutors declining to prosecute is not the same as a court making a ruling (for one thing, the former decision may have been affected by the fact that, as the NYT story points out, "art forgery is not a crime under Mexican law").