Steve, you look to me like you are cherry picking statistics. Of course the tool isn't completely useless, which enables you to do so.
But you haven't answered my questions as to why there is no noticeable difference in the DI between recent winners of the Leger, Ascot Gold Cup and Derby.
Missed this earlier... A number of factors contribute to this (discussed previously). Not least that horses with DIs of below 1 and negative CDs are far less common than those with DIs of 1 and above and it can be the case that there is no ideal representation in any given race. In the absence of these types something has to win and the average is consequently affected. This is why I have urged to look beyond the average to the ‘right types’, which typically score below these averages in such races.
Nevertheless in such races as the St Leger and Gold Cup the horses near to the top of the table show a high correlation with the actual result. To illustrate:
2012 St Leger contenders
Horse Sire/dam sire Profile DI CD
Michelangelo Galileo/Darshaan 3-0-12-5-2 = 22 0.69 -0.14
Ursa Major Galileo/Shirley Heights 5-1-14-6-4 = 30 0.76 -0.10
Camelot Montjeu/Kingmambo 6-1-17-8-0 = 32 0.94 0.16
Thomas Chippendale Dansili/Sadler’s Wells 3-2-12-4-1 = 22 1.00 0.09
Encke Kingmambo/Sinndar 9-3-21-10-1 = 44 1.05 0.20
Guarantee Authorized/Cadeaux Genereux 3-1-9-3-0 = 16 1.13 0.25
Thought Worthy Dynaformer/Diesis 6-2-23-1-2 = 34 1.34 0.26
Dartford Giant’s Causeway/Kris S 6-2-31-1-0 = 40 1.42 0.33
Main Sequence Aldebaran/Pivotal 8-3-11-1-1 = 24 2.20 0.67
Encke won this year’s race and was fifth in the table despite showing 11 stamina points. The next three in the race occupied the top three positions in the table. Just three in the race had DIs of below 1 (the second, third and fourth).
Last year the top four in the table finished in the top four in the race. Only two in the race had DIs below 1 (including the winner).
2011 St Leger contenders
Horse Sire/dam sire Profile DI CD
Masked Marvel Montjeu/Mark Of Esteem 2-0-9-4-1 = 16 0.68 -0.13
Seville Galileo/Silver Hawk 3-0-16-5-2 = 26 0.73 -0.12
Brown Panther Shirocco/Unfuwain 3-0-6-1-2 = 12 1.00 0.08
Sea Moon Beat Hollow/Alleged 4-2-12-5-1 = 24 1.00 0.13
Genius Beast Kingmambo/Sinndar 9-3-21-10-1 = 44 1.05 0.20
Wonder Of Wonders Kingmambo/Sadler’s Wells 12-2-26-12-0 = 52 1.08 0.27
Blue Bunting Dynaformer/Linamix 3-2-18-0-1 = 24 1.40 0.25
Buthelezi Dynaformer/Quiet American 5-6-22-0-1 = 34 1.83 0.41
Census Cacique/Selkirk 4-2-8-0-0 = 14 2.50 0.71
Likewise in this year’s Gold Cup the first three in the race occupied three of the top four slots in the table. The other slot was taken by Fame And Glory (the previous year’s winner). All of these have DIs of below 1 together with negative CDs.
2012 Ascot Gold Cup contenders
Horse sire/dam sire Profile DI CD
Colour Vision Rainbow Quest/Monsun 8-0-20-14-4 = 46 0.64 -0.13
Fame And Glory Montjeu/Shirley Heights 3-1-14-6-4 = 28 0.65 -0.25
Opinion Poll Halling/Shirley Heights 5-1-13-4-5 = 28 0.81 -0.11
Saddler’s Rock Sadler’s Wells/Groom Dancer 7-1-22-8-4 = 42 0.83 -0.02
Askar Tau Montjeu/Acatenango 3-0-9-4-0 = 16 0.88 0.13
Overturn Barathea/Kris 8-1-9-5-3 = 26 1.08 0.23
Memphis Tennessee Hurricane Run/Cozzene 2-2-9-2-1 = 16 1.13 0.13
Bridge Of Gold Giant’s Causeway/Doc’s Leader 2-1-24-0-1 = 28 1.15 0.11
Caucus Cape Cross/Sadler’s Wells 4-7-11-4-0 = 26 1.74 0.42
Lacateno Green Tune/Acatenango 6-0-6-2-0 = 14 1.80 0.71
Nehaam Nayef/Roi Danzig 5-3-8-2-0 = 18 2.00 0.61
In 2011 the top two in the race occupied two of the top three positions in the table. Both with DIs below 1 and negative CDs.
2011 Ascot Gold Cup contenders
Horse sire/dam sire Profile DI CD
Blue Bajan (Montjeu/Darshaan) 2-0-11-5-2 = 20 0.60 -0.25
Fame And Glory (Montjeu/Shirley Heights) 3-1-14-6-4 = 28 0.65 -0.25
Opinion Poll (Halling/Shirley Heights) 5-1-13-4-5 = 28 0.81 -0.11
Duncan (Dalakhani/Danehill) 2-2-12-4-2 = 22 0.83 -0.09
Askar Tau (Montjeu/Acatenango) 3-0-9-4-0 = 16 0.88 0.13
Geordieland (Johann Quatz/Highest Honor) 3-1-10-4-0 = 18 1.00 0.17
Tastahil (Singspiel/Shaadi) 5-4-17-7-1 = 34 1.06 0.15
Royal And Regal (Sadler’s Wells/Smarten) 6-3-19-8-0 = 36 1.06 0.19
Motrice (Motivator/Affirmed) 5-0-9-4-0 = 18 1.12 0.33
Holberg (Halling/Assert) 5-2-4-4-1 = 16 1.29 0.38
Manighar (Linamix/Rubiano) 3-4-11-4-0 = 22 1.32 0.27
Kasbah Bliss (Kahyasi/Double Bed) 4-0-6-2-0 = 12 1.40 0.50
The Betchworth Kid (Tobougg/Runnett) 3-1-4-2-0 = 10 1.50 0.50
Brigantin (Cozzene/Poliglote) 3-6-14-3-0 = 26 1.60 0.35
Fictional Account (Stravinsky/Indian Ridge) 6-9-15-0-0 = 30 3.00 0.70
Aaim To Prosper (Val Royal/Ahonoora) 7-4-5-2-0 = 18 3.00 0.89
Consequently those at or near the top of the tables in such distance races have a high correlation with the race result. Of course it doesn’t always work, but by using common sense as a filter we can improve again on the edge the system hands to us.