If you lookup debt as a percentage of gdp
USA - 88.454%
Canada - 136%
If you compare debt by capita:
USA - $75.8K per person
Canada - $76.4K per person
I'm using numbers from here:
https://worldpopulationreview.com/country-rankings/countries-by-national-debt
Which source is telling you USA debt is 30 times greater?