I read that the attendance at Ibrox for their Third-Division match, was greater than all of the SPL matches combined.
Correct.
It was bigger than ALL other Scottish matches combined!. SPL, Div 1, Div 2 and Div 3. With 1500 fans to spare.
Rangers got 49118. Celtic, the SPL champs, on the opening day 2 weeks ago, where they raise the league flag as winners of the SPL last year, got 48500.
Rangers are still the biggest club in Scotland and only Man U and poss Arsenal and Chelsea are bigger in England.