the factual and legal issues comprising the plaintiff's cause of action." Wal-Mart, 131 S. Ct. at 2551-52. Compare Brown I, 576 F.3d at 156 (citing Eisen v. Carlisle & Jacquelin, 417 U.S. 156, 177, 94 S. Ct. 2140, 40 L. Ed. 2d 732 (1974), and refusing to inquire into Plaintiffs' statistics because it would be an impermissib