Admission Chances for GMAT Club Members - Shocking?

We did a comparison (huge thanks to Dzyubam), of GMAT Club member acceptance rates to Top 10 Schools vs. general acceptance rates as published by schools and are for the lack of a better word - Shocked!

On average, for class of 2012, GMAT Club members had much greater chances of getting into a top 10 school: 24% vs 15% (that's a 60% greater chance) with some schools really standing out. For example, from the review of the HBS thread, out of 112 applied GMAT Club members, 33 were granted admission, which is a 29% acceptance rate, compared to 12% HBS average. Thus for HBS, statistically speaking, GMAT Club members, had a 145% greater chance of admission

Detailed results follow - comments welcome!

	Applied	Admitted	GMAT Club Admission %	Average Admission %	Difference	Scholarship	Waitlisted	Denied	Matriculated*	UNKNOWN
Harvard	112	33	29%	12%	145%	1	9	70	30	0
Stanford	176	22	12%	9%	38%	0	12	49	21	93
Wharton	252	43	17%	16%	6%	18	52	75	33	82
Booth	160	62	38%	22%	76%	14	32	66	60	0
Tuck	42	15	35%	16%	123%	3	5	18	13	4
MIT Sloan	150	18	12%	15%	-20%	2	23	32	16	77
Columbia	162	27	16%	15%	11%	0	10	44	23	81
Kellogg	233	78	33%	19%	76%	3	46	109	74	0
NYU Stern	111	27	24%	15%	62%	1	14	17	24	53
Haas	89	15	16%	12%	40%	2	5	25	13	44

I know there are many factors involved in the admissions process and a sheer registration with GMAT Club will not get anyone to Harvard, but still, the numbers are numbers.

I would argue that GMAT Club and information exchange do enhance one's application and its quality
I would also argue that the forum helps applicants estimate their chances better and thus if they know, the school is a stretch, they are not wasting their effort on unreasonable goals.
Finally, I think the results demonstrate that effort always pays off and that those who are determined will reach their goals and dreams (including the 3 people who chose not to matriculate at HBS - another shocker).