You missed a point here . IELTS result are making a difference , but the pattern is not such that only 13 days around a result we see a sudden spike in EE entries. EE entry flow is consistant .
Not all IELTS takers are immediately ready with there ECA evaluation and hence do not enter the pool on 13th day or so . But yes , scores upgrades due to IELTS , is a factor we cannot undermine , but again, they are not the majority in the pool. For example , with Bachelors degree you could jump to max 441 , who are also in the waiting queue. With Masters , stories may be different , but here is another catch not everyone scores CLB10.
What we have observed so far is , the moment we reached 440 on 23rd May , there was a draw skip following it , which added 7 more days of fresh Entries. Next time when we were too close to 440 i.e on 11th July , the pool was flooded with long pending nominations from Ontario and Manitoba.
So, we may call it tough luck this year around , series of events have kept <442 group at bay.
No doubt , influx of high score entries is unprecedented , but IELTs result have never brought a surge so far. If they bring it this time , then we will have another aspect to predict from next time onwards