Having said that, its still impossible to predict anything and all these posts and threads are useless to be honest. You just have to wait and see.
Unpredictable, yes there are many factors that are really unknown to us like on what basis CIC is sending invitation to particular candidates, for sometime the entry pool has around 1500 candidates, scoring above 450, but for the current pool if isn't 1500 with a score reaching 450 or above then there is a chance of delaying.