Josh Maja, one of seven loanees in the squad for that match, saw his second-half strike contentiously ruled out to leave Fulham three points adrift of safety.
Parker has been hugely impressed with Fulham's recruitment and believes exploiting the loan system has given them a great chance of survival.
"The club stated that the main aim was to try and stay in the division without over expenditure," he said.
"In terms of the money we've spent and who we've brought in I think you can see that.
"We took the decision to bring in quality players on loan to try and keep us in the division and those loan players have done fantastically well."
Parker acknowledges the loan system acts as a huge benefit in trying to bridge the gap to the division's top teams.
"It gives a team a chance that finished fourth last year in the Championship, stepping into this division, the gap in finances is huge,' he continued.
"You're stepping into the big league where teams have obviously got those finances and have been around the league for some time.
"Certainly for a team like us your aim is to get into this division and the next biggest challenge is to stay in it.
"The loan system is one that gives you a chance of being competitive."