There are some bottlenecks in the process of data reporting, and these bottlenecks can vary by user so it is hard to determine which is correct. Typically I see this happen when a video gets an unusual spike in views. Normally it is the larger number that is correct and the other platforms just need to catch up. However I have seen cases where the larger number was inflated due to bot views which were later removed. Hope that helps, good luck (and I presume congratulations on a great video!).