Talking about Gronk, what % of his Placing would you attribute to Chad Brown?

I believe he got hold of him a mere couple weeks back, which leads me to think he couldn't have done wonders unless the horse was already in good form (though it was not apparent according to his sheet).

Granted, the Jose Ortiz ride seems to have shaved serious lengths to put him ahead of Hofburg and Vino Rosso. Still, counting out the scenario where all other horses including Justify regressed badly Gronk made one hell of a close, reminding me of Keen Ice's Travers. Was this genuinely some 7 point top powered by his natural filling out as a mid-year 3yo...he looked comparable to Justify in size and stature with powerful hindquarters?

Maybe Aiden O'Brein should have given Mendelssohn to Chad Brown a couple days before the Derby and watch his colt steal away the blanket of roses while sipping his Veuve Clicquot...could have saved him some serious heartburn! Are we looking at a new trick for the Euro invaders that can help them turn the tables or a just sub-par crop despite what's been promoted so far?