OTTAWA INTL (ON) QUEBEC INTL (PQ) 169.00 38.58 207.57 CAD GP-4V9QSTC

QUEBEC INTL (PQ) OTTAWA INTL (ON) 169.00 53.35 222.35 CAD GP-4V9QSUC

QUEBEC INTL (PQ) TORONTO PEARSON (ON) 199.00 47.15 246.15 CAD GP-4V9QT8C

The price for YOW/YQB is the same for each direction but the tax is higher ex YQB. Even higher than the tax to YYZ where the fare is higher?

This is from AC websaver site.