James McPake reckons Celtic are a harder nut to crack than Rangers with their depth giving Ange Postecoglou's aspect the sting.
The previous Dundee boss misplaced his job final month with Mark McGhee drafted in as his alternative.
The timing was peculiar after again to again wins however McPake nonetheless had time to guide his workforce out twice every in opposition to the Glasgow giants.
McPake's Dundee aspect misplaced all 4 - though ten objectives shipped over two video games in opposition to the Hoops hinted at who that they had a harder time in opposition to.
And the previous boss says he is in no hurry to face off in opposition to them once more, admitting they seem to be a harder check altogether than Rangers.
He mentioned on Go Radio: "To distinguish each groups from managing in opposition to them, the primary time we went to Celtic Park when Ange was simply there, it hadn't fairly clicked.
"Kyogo made his debut and so they beat us 6-0. I do not do not forget that one very properly...however they had been nice that day and you possibly can see one thing was constructing.
"The Rangers sport underneath Steven Gerrard, we needed to change and provides all of them the respect they had been due.
"I imagine we had been very unfortunate. Jason Cummings missed a penalty and we had double the pictures heading in the right direction of Rangers that day, however they gained the sport, so tremendous.
"The sport when Celtic got here to Dens, they killed us once more. They scored the early aim, then they obtained one other one, and so they had been relentless.
"You have no likelihood after they try this. You assume you've got obtained an opportunity, then they arrive out once more at first of the second half.
"That is one factor I seen about Celtic: they're very aggressive at first of each halves, and so they're ultra-aggressive as soon as they get a aim."
McPake admits Gio van Bronckhorst has improved Rangers since he took the reins and the Dutchman remains to be hopeful of clawing again the three-point hole on Celtic.
And McPake is impressed with a number of the modifications he has made together with Glen Kamara being deployed in the next position for his or her Scottish Cup victory over Dundee on the weekend.
However he nonetheless feels it is Celtic who've extra to supply.
He went on: "Giovanni van Bronckhorst, he modified it about and that day they cruised previous us 3-0. They had been very snug.
"He made it completely different, and watching it on Sunday he had Glen Kamara enjoying additional up the pitch within the No.10. He is seen one thing in Glen that he desires to make use of.
"Having labored with Glen, he is a significantly better participant when he is additional up the pitch and he can rating objectives as properly. He is good at that finish of the pitch though he hasn't scored many for Rangers.
"But when I used to be to select one I would not wish to play in opposition to - the 2 of them would beat us! - however Celtic have been those that we actually struggled in opposition to."