In genius studies, Cox-Buzan-Platt IQ refers to "mean IQ" of geniuses common to the 1926 Cox IQ ranking (300 geniuses), the 1962 Platt IQ ranking (12 geniuses), and the 1994 Buzan IQ ranking (100 geniuses), which only amounts to two, namely: Newton (IQCPB:192) and Darwin (IQCPB:173); these two IQ numbers, to a good approximation, might be the only two unbiased sober rankings in the entire top 1000 genius rankings.

Overview
The following are the mean IQs of the geniuses common to the Cox IQs (1926), Platt IQs (1962), and Buzan IQs (1994):

		Cox IQ (1926)	Platt IQ (1962)	Buzan IQ (1994)	Mean
	--------------------------------------	-------------------	--------------------	-----------------------
1.	Isaac Newton	190	190	195	192
2.	Carl Gauss		190
3.	Archimedes		190	190
4.	Albert Einstein		180+	205
5.	Louis Pasteur		180
6.	John Neumann		180
7.	Linus Pauling		180
8.	Percy Bridgman		180
9.	Bertrand Russell		180
10.	Sigmund Freud		180
11.	Charles Darwin	165	180	173	173
12.	Bernard Shaw		180

Here, of curiosity, we see only two geniuses, namely Newton (mean IQ:192) and Darwin (mean IQ:173), common to the 300 Cox geniuses, the 11 Platt geniuses, and the 100 Buzan geniuses, and two geniuses, namely Archimedes (mean IQ:190) and Einstein (mean IQ:195) (note: used "185" as Platt measurement for Einstein's IQ), common to two.

A second pattern noticeable, is that Darwin's IQ seems to "grown" by about 5 points every 23 years, on average, baring prolonged discussions of the methods of each estimation method; meaning, in some sense, that the intellectual influence of his ideas are impacting more, in retrospect.

Cox-Buzan-Platt-Thims IQ

See main: Cox-Buzan-Platt-Thims IQ

The following are the mean IQs of the geniuses common to the: Thims IQs (2019), Cox IQs (1926), Platt IQs (1962), and Buzan IQs (1994):

		Cox IQ (1926)	Platt IQ (1962)	Buzan IQ (1994)	Thims IQ (2019)	Mean
	--------------------------------------	-------------------	--------------------	-----------------------	----------------------
1.	Isaac Newton	190	190	195	220	199
2.	Carl Gauss	190	190		190
3.	Archimedes	190	190	190	190
4.	Albert Einstein		180+	205	215
5.	Louis Pasteur		180		175
6.	John Neumann		180		190
7.	Linus Pauling		180		190
8.	Percy Bridgman		180		185
9.	Bertrand Russell		180		180
10.	Sigmund Freud		180		185
11.	Charles Darwin	165	180	173	180	175
12.	Bernard Shaw		180		180

Here, we see the rule, in respect to IQ and genius rankings, that "time begets discernment".