Pac forgot he was an entertainer and not a gangster, straight up. Baby Lane was a real deal, hardcore, gangster, and was already under investigation for murder, when he shot and killed Tupac on Vegas. He wasn't about to take the beat down issued at the MGM Grand by Suge and Pac. If he didn't catch up with them in Vegas, it would have been done in LA. MC Eiht puts in perfect perspective in this interview, Tupac was out of his league and paid the price with his life.