As I see it, the difference between the arguments is that the Remain side deals with facts - or at least conjuctures based oh them - while Brexit goes for emotions and every time they are asked if they know what will happen the answer is "I don't know". Brexit's tactic is difficult for the Remain side, because how do you campaign when the other side just ignores facts? Just like what Trump is doing, how can the other candidates respond? Trying to be plain rational just doesn't work with a lot of the voters.