Have a trip in early January to get to ISB from YUL.

Option A to take the 777 direct to Qatar, then onwards.
Option B to go through YYZ and take the 380 through Dubai with Emirates, (2 stops)
Option C through YUL -Frankfurt with LH then switch to Eithad to ABU then ISB. (2 stops)

I'm Star Alliance gold and will get a shower and break in FRA, + points. Probably little chance of upgrade as it is not an AC flight. Only reason to go via Frankfurt is the miles. Only reason to take Emirates is the 380 and a few hours in Dubai airport.

Any reason not to take the Qatar flight if they are all equal cost in Y class? Seems like its likely the best Y class service, good connection and only 1 stop.

Cheers