Thank you for your reply. In this case, your illustration should be a cut off rule, and not a tie break rule.
According to/quoting IRCC: Tie-breaking rule: December 31, 2017 at 12:14:21 UTC
Tie-break: a means of deciding a winner from competitors who have tied.
So, if this date is the tie breaker, that should mean the date that determines the highest ranked candidate among 441 profiles, which is the oldest profile/oldest upgraded profile.
The reason for all these is that, from my very first projection (post 25/07/18 draw), let's assume IRCC misconstrued/obscured their tie break/cut off terminologies, and your well defined illustration is their intention. That means, If as much as 50+ candidates were able to improve their scores to 441 from just 15/11/17 to 31/12/17, how many would've done the same from 31st Dec, 2017 till date? Probably, a whole lot, implications could be dire for the next draw for those of us that are sub 440.
Upon calculation, my earlier illustration which is the mirror reverse of yours - and if the tie break rule was indicated by 31/12/17 - aligns better with previous draw distributions. Incidentally, puts us in a better position going forward.