I think it's worth reviving this post, after the Aarhus WC. The issue is that in my opinion, and that of many others', STA is underrated in the current AIDA point system. Of course, this is only of concern when a competition elects a "global winner", typically summing up DYN and STA points. There is some pride at stake, but more often than not also some money or other valuable prizes, and let's not forget the team WC! Before I launch into this, I want to clarify that for sake of simplicity I will compare only men results, only DYN and STA. I am very aware that female might have even more reasons to complain, and same goes for CNF and DNF. Also CWT might need revisiting. But I have to start somewhere, so I start with STA vs DYN.
There are two views: either look at the maximum ever done by a human being, or at what the best athletes achieve in competition. Bill's remark was
AIDA WR:
DYN, 250m - 125 points
CWT, 122m - 122 points
STA, 10'12" - 122,4 points
Even and nice...
And now: STA 11'35" - 139 points
So in this respect the point system is ok. I have no doubt that soon somebody will reach 278m dynamic, making things "even and nice".
However, the point system is not devised or used for WR like those of Tom and Stephane. And the point system is not there to measure Stephane against Tom. The point system comes into discussion when it is used to give a big prize to the guy who did the overall best results in a competition.
And this is where Aarhus comes in: it is the top competition, all the biggest names (almost) were present, there were a lot of performances (qualificatons and finals), and it is all summarized in a handy excel sheet. Again for simplicity I include also performances with penalties and DQ, both in STA and DYN.
I already wrote somewhere else that the 8 male A finalists in
DYN collected 872.5 points, the STA finalists 775.4 - many were the same people. That's 12.5% more, or in other words to achieve the same total points each STA finalist should have done
1 minute more in his result....!
Another number: there were 73 DYN attempts by men (qual+finals), and 67 STA attempts. If you take the 100 points reference (200m or 8'20"), well 31 DYN were at or over this limit, and only 3 STA. That's
42.5% against 4.5%. If this is not a statisticallly significant discrepancy, I don't know what is.
It is very easy to understand the origin of the discrepancy. It was once said that a world-class freediver was a guy capable of 60m CWT and 6'STA. Since this statement, we have seen the revolution of monofins. Monofins have increased dramatically the performance of DYN, and there is no equivalent in STA. A good finswimmer with decent -but not exceptional- breathhold can grow to 200m in a matter of months. Someone may want to count how many people have done 200m in competitions ever, and how many have done 8'20". I didn't count, but I am ready to bet that there is at least 10 times more DYN than STA.
Conclusion:
if we have a discussion about the point system, it's because it is used to compare different disciplines in COMPETITIONS (not world record attempts).
there is no need to change the AIDA rules if there are many against it, but it should be encouraged and applied by competition organizers to give different weights to the points in STA and DYN (and of course to the other disciplines too). Nordic Deep set an example.
My guess, from an analysis of the Aarhus results, is that the statistical difference between STA and DYN is about 12.5 to 14.5%. i.e. 200mDYN=7'12" STA, or
250mDYN=9'. Which interestingly, is also about the maximum ever done
in competition in DYN and STA.