@Grey, thats terribly desperate of you to combine chase G1s, novice G1s and stayers G1s. Then the one at the top drew my attention as if thats how erroneous you completed this desperate list, then it also can't be trusted for its accuracy. Jezki wasn't 6 times behind, he beat him 4 times and Jezki beat him 3 times. Jezki is the only top class 2 miler on that list; 2 of them had a brilliant novice campaigns in Our Conor and Peddlers Cross but failed to show anything of note in open company.
Thats what @DO was hinting at. Plus like he said, unlike Istabraq, in almost all his races the jockey pushed him to the limits to only win by 1-2 lengths from average opposition. The 175 official mark he was given is the actual utter codballs. He was an ~170 hurdler at best. What separates him from others was his ability for 5 seasons to hit that mark. Like we've seen horses can peak only for a race or for a season, so thats what HF should be hailed for, not his raw ability which didn't took much to overcome(like ROR,Jezki and others did when they were at their best) or by making lists of G1s novices/stayers/future chasers.