I just did 2 dummy booking, one on aeroplan and second one on aircanada.com to compare fuel surcharges, YYZ to BKK and here is comparison.
Total airport taxes, fees and surcharges (CAD) $889.76 plus 75000 points

Airport taxes, fees, and surcharges will appear on your credit card statement as an Air Canada charge and will display your ticket number.

Adult(s)

Fuel Surcharge $711.50
Japan Passenger Facilities Charge $14.20
Narita Passenger Security Service Charge (intl) $7.00
Nav Canada - Air Navigation Services $30.00
Canada Domestic/International Airport Improvement Fee $25.00
Canada Harmonized Sales Tax $3.25
Canada Domestic/International Air Travel Security Charge $25.91
France Domestic & International Airport Tax $28.90
France International Passenger Service Charge $20.10
Thailand Domestic Passenger Service $23.90
Total airport taxes, fees and surcharges per passenger $889.76
Total passengers 1
Total airport taxes, fees and surcharges per passenger type $889.76

air Canada economy fare
Passenger Type Adult
Base Fare
859.00
Fuel Surcharge 290.00
Taxes, Fees and Charges
Canada Airport Improvement Fee 25.00
Japan - Passenger Security Service Charge 13.90
Canada Harmonized Sales Tax (GST/HST #10009-2287 RT0001) 3.25
Japan Passenger Facilities Charge 28.36
Air Travellers Security Charge (ATSC) 25.91
Thailand Domestic Psgr. Service 23.33
Total airfare and taxes before options (per passenger) 1268.75
Number of passengers 1
Grand Total - Canadian dollars
$1268.75