That depends on how you define winning. If winning means getting the most delegates then Paul has won. If winning means trusting the MSM when they say such and such won then no Paul hasn’t won.
It depends how the RNC defines winning. You need to win 5 states to be on the first ballot at the convention. Are they going to count them as a “win” if Paul lost the popular vote but got a bunch of delegates that were supposed to go to someone else to shift their loyalty to him?