Gerrard, a Liverpool legend, is now coaching Scottish giants, Rangers.
"We were very good with 11 men, and even better with 10".
"For 93 minutes it was flawless, I'm gutted for my players, we conceded so late on but we're a class above Aberdeen".
"We dust ourselves down and take the positives from Burnley, and there were many of them - certainly in the individual performances from the players".
Baby's body pulled from water near Brooklyn Bridge
The baby boy, thought to be about 8 months old, was transported to a local hospital where he was pronounced dead. No parent or guardian was present at the scene and the child showed no signs of trauma, police said.
Aberdeen posed little threat until the dying moments when Bruce Anderson found space in the box in the third minute of injury time and rifled into the far corner with Aberdeen's first shot on target.
"The onus was on us to try and find answers", McInnes told the BBC.
Rangers - desperate to end bitter city rivals Celtic's seven-year hold over the title - had taken the lead on the half-hour mark when James Tavernier converted a penalty awarded after Dominic Ball's tug on Josh Windass.
McKenna had been at the heart of the sending off of Morelos, who went for an early bath when the 22-year-old Colombian retaliated to the Aberdeen player's barge.
Brendan Rodgers's side began their title defence with a comfortable 3-1 home win over promoted Livingston on Saturday.
Goals from Tom Rogic, Odsonne Edouard and Olivier Ntcham gave the Hoops all three points.