A workout of the Ability-X 6f Par from several tracks over a couple of years time. This shows that most of what the handicapper believes about track speed / variant and class are simply more mythology from the racing info industry. These are from a spot check of my records.
2nd - 6fD - Par 320/97
AP 6/28/09
#/PST/ErlSpd /ML/Comp
326 1 99 8 425
1 Brave Hunter Vargas Roan 114 20.00 8.40 4.80
8th - 6fD Par 320/97
AP 6/21/09
#/PST/ErlSpd /ML/Comp
260 5 94 6 354 =320/97
5 Trying Brian Jara
Fernando 118 18.40 6.00
3.80
7th - 6fD - Par 320/97
AP 6/20/09
#/PST/ErlSpd /ML/Comp
327 3 95
10 422
313 6 93 8 406
6 Life's Lessons
Karlsson Inez 122 26.60 11.80
7.00
3 Gato's Pirate Meier Brandon
117 7.40 4.20
$2 Exacta
$159.40 6-3
9th - 6fD Par 320/97
MTH 6/14/09
#/PST/ErlSpd /ML/Comp
339 2 98 12 437 = 320/97
2 Fearless Leader Centeno Daniel 117 34.40 10.40
12th - 6fD Par 320/97
BEL 6/06/09
#/PST/ErlSpd /ML/Comp
321 14 97 3
418
335 5 97 6 432
319 2 94 8 413
5 Brave Soul Velasquez
Cornelio H. 123 22.40 9.90
6.00
2 Monastir Dominguez Ramon A. 118
13.20 7.00
14 African Knight Castellano Javier
118
3.00
13th - 6fD Par 340/94
BEL 6/06/09
#/PST/ErlSpd /ML/Comp
320 14 97 4 417
14 Wanda's Double Dominguez Ramon A. 117 10.40 5.60 4.30
1st - 6fD - Par 320/97
PIM 5/16/09
#/PST/ErlSpd /ML/Comp
315 5 100 2.5 415
322 6 88 8
410
5
Scotchontherocks Castellano, Jr. Abel
119 11.60 4.40 2.60
6 Ijada's Run Franklin Malcolm
120 16.40
3.40
$2 Exacta $167.80 5-6
1st - 6fD - Par 320/97
CD 5/02/09
#/PST/ErlSpd /ML/Comp
311 3 96 3 407
3 Raposa Borel Calvin H. 124 13.20 4.20 2.80
6th - 6fD Par 320/97
GP 2/07/09
#/PST/ErlSpd /ML/Comp
329 5 98 6 427
5 Taking Over Ortiz Jose F. 119 28.20 11.80 6.40
7th - 6fD Par 320/97
GP 1/24/09
#/PST/ErlSpd /ML/Comp
322 9 84 12 406
9 This Ones for Phil Prado Edgar S. 120 25.40 8.60 5.20
This race above got Andrew Beyer screaming about drugs, and as you can see the horse came in with a Par rating, the chart below is from a year before, also at GP.
8th - 6fD Par320/97
GP 1/28/2008
# POST ErlSpd / ML
332 8 92 3.5
322 4 88 5
131 12 0 10
$2 Trifecta
$568.80 8-12-4 #12 is a first time starter
8 True George Velazquez John R. 122 5.40 3.60 2.60
6th - 6fD Par 320/97
SAR 8/10/08
# POST ErlSpd / ML/Comp
328 6 94 3 422
6 Casanova Move Coa Eibar 118 4.80 2.50 2.10
8th - 6fD Par 320/97
SAR 8/10/08
# POST ErlSpd / ML/Comp
337 1A 96 8
433
319 7 94 8 413
325 2B 93 8 418
2B French Song Maragh
Rajiv 116 30.60 11.00
5.50
1A Demaliat Desormeaux Kent J. 117
6.50 3.90
7 Yes by West Leparoux Julien R. 116
6.10
$2 Exacta
$139.00 2-1
$2 Trifecta $1,444.00 2-1-7
1st - 6fD - Par 320/97
SAR 8/08/08
# POST ErlSpd / ML/Comp
327 2 99 3 426
2 Ambling Rose Velasquez Cornelio H. 121 8.70 3.30 2.50
1st - 6fD Par 320/97
AP 5/22/08
# POST ErlSpd / ML/Comp
327 2 92 3.5 419
2 Sully's Wish Zimmerman Ramsey 121 4.00 2.40 2.10
4th - 6fD Par 320/97
KEE 4/20/08
# POST/ErlSpd/ML/Comp
327 5 97 30 424
5 Horticulture Graham James 120 130.20 45.80 13.20
1st - 6fD Par 320/97
GP 4/19/08
# POST ErlSpd / ML/Comp
328 1 93 3 421
1 Running Aptitude Noguera Marleni 117 11.60 6.20 2.80
5th - 6fD Par 320/97
GP 4/19/08
# POST ErlSpd / ML/Comp
324 3 92 6 416
3 Crazybrook Dominguez Eddie 111 27.20 11.40 6.20
This shows that a consistency runs through horse racing that past performance handicapper's have been unable to find in 100 years of looking. However, it can not escape Ability-X ratings.