I think she'll struggle without an uncontested lead, soft ground to keep the pack at bay and a jockey keeping her just the right side of too fast without being overly conservative, but for all that she had those advantages yesterday I think her performance on the day was for real regardless of how hard it will be to duplicate.
Horses gifted an easy lead don't have to change pace positionally or fight off challenges from other horses, and are often flattered - both by the bare form, and the time it was achieved in.
There's little doubt Coolmore know this, and have used the ploy to their advantage in the past - in such as Hawk Wing's Lockinge and Cape Blanco's Irish Champion - and there's also little doubt that HQ will be overrated as a consequence, and unable to replicate it.