How Can This Not Be Called a DEAD HEAT? - See Photo Evidence

Goodwood 3:55 23/05/15 - Green with Red hat wins

1st (3)  9 Enlace M Johnston 3 8-0 N Mackay 12/1
Tracking leaders when left in lead over 4f out, edging left from 2f out, ridden and pressed when hung left inside final furlong, just held on opened 16/1

2nd (8) nse 5 King To Be (IRE) R Hannon 3 8-5 Cam Hardie (3) 9/2
Soon pushed along in rear, headway on inside 3f out, chasing leaders 2f out, not clear run and switched left over 1f out, strong run inside final furlong, went 2nd final 75 yards, finished fast, just failed, unlucky opened 11/2

I had no financial interest in the outcome. But I would like to know if Photo Finish Technology and a human judge of the proposed finish line can really separate these finishers? Photo taken from a CH4 freeze frame of Photo Finish - sorry about the fuzz