By longer haul, GHT means to write, that Executive First is an international product on transatlantic, transpacific and south american routes by AC. You can get the lie flat seat on a YYZ-BGI, YYZ-LAX and YYZ-YVR/YUL route, but that's plain old Executive Class.
Depending on how you look at it.............
Seat wise
http://www.aircanada.com/en/about/fleet/ you either get Executive First suites, Executive class seats
Service wise, you are right Executive First service (international) or Executive class service......
Then again, sometimes they substitute/interline aircrafts and certain routes operating different seat products