Rangers stormed to victory on Saturday against Raith, in what was their fourth five-goal haul already this season.
“If they play like that, they can win every game this season,” said McKinnon.
“I don’t think they will but if they put in performances like that there is no reason why they can’t.”
Rangers were irresistible against Raith, displaying the kind of attacking verve and goal threat that has already come to be expected under Warburton’s reign.
Lee Wallace, James Tavernier and Barrie McKay put the Gers into cruise control before Martyn Waghorn converted twice from the spot to confirm the rout.
McKinnon also identified Rangers’ wealth of options as a worry for the rest of the teams in the division.
“Their strength in depth is quite frightening – to bring on people like Kenny Miller, Nicky Law and Ryan Hardie shows what a top outfit they are,” he added.
“It will be very difficult for all teams coming to Ibrox this season and we certainly found that.”
The Gers undoubtedly have the quality to win every league game this season - if taken on a case-by-case basis - but football is everything but predictable and injuries and upsets are likely to prevent such a remarkable achievement.
That being said, it’s already apparent that no one in the Championship will be able to match the men from Ibrox, and both sets of Old Firm supporters will already be eyeing up next season’s long-awaited league encounters.