So far, an army of synchronized naked short sellers coordinated with friends in the media haven't appeared. Methinks in part because of JPM's CEO Jamie Diamond would respond on numerous fronts and his opponents are afraid of the results. The same can't be said for the senior management leaders at LINN Energy, unfortunately.
Comparing a JPM to LINE is silly. There are a lot of people out there automatically dismissing the investigation as another government witch hunt, trying to break up the bank. Add in Jamie as the CEO and the confidence factor goes up. The guy does have a brass set, which is why he is in charge of such a large successful organization.
Remember, JPM could probably buy LINE with petty cash... :P