Suzuki using myclimate to offset carbon from cross-Canada tour

The Globe reports that Canadian environmentalist David Suzuki is offsetting the carbon pollution from his current cross-Canada tour using Swiss provider myclimate

https://www.myclimate.org/EN_ticket/ticket_insert1.php

Just out of curiousity, I compared a YOW-YHZ roundtrip (how geeky am I to remember airport codes, sigh)

myclimate (ticket star - "the full impact of your flight on the climate is compensated"):

Ottawa (CA)   -   Halifax (CA)   -  Ottawa (CA)
this flight covers a distance of 1'908 km.

One myclimate ticket costs 22.00 Swiss Francs and compensates for the emission of
567 kilograms of CO2

Total price     CHF 25.00
[Google says 22 Swiss Francs = Can$20.60]

Green My Flight:

OTTAWA - YOW to HALIFAX - YHZ: 955.7 km

Total Distance: 1911.4 km
Total Emissions: 259.8 kg
Program Cost: $7.00

So I'm guessing that basically myclimate considers full impact to be double raw CO₂