Yeah, looks like it changed in 2014. Here's the list of acceptable words from before:
For the purposes of this Regulation, “tire specifically designed for winter driving” means,
(1) before 15 December 2014, a tire that meets one of the following criteria:
(a) it bears one of the following inscriptions:
i. “Alaska”;
ii. “Arctic”;
iii. “A/T” or “AT”;
iii.1. “AT/S” or “AT-S”;
iv. “Blizzard”;
iv.1. “Cresta”;
v. “Ice”;
v.1. “INSA T1” or “INSA T2” or “INSA TT770”;
vi. “LT”;
vii. “Nordic”;
viii. “Snow”, except “mud and snow”;
ix. “Stud”;
ix.1. “Studdable”;
ix.2. “Studded”;
ix.3. “Studless”;
ix.4. “TS”;
ix.5. “Ultra Grip”;
x. “Ultra traction”; or
xi. “Winter”;
(b) the pictogram in Schedule A is engraved on it; or
(c) it is a studded tire used in accordance with the Regulation respecting the use of non-skid devices on the tires of certain road vehicles (chapter C-24.2, r. 44);
(2) as of 15 December 2014, a tire on which the pictogram in Schedule A is engraved and a studded tire used in accordance with the Regulation respecting the use of non-skid devices on the tires of certain road vehicles.
https://www.legisquebec.gouv.qc.ca/en/document/cr/C-24.2,%20r.%2045So, after 2014 anything with the symbol is good. Kind of a joke, IMO. There are plenty of crappy tires with 3PMS.
Actually, reading it again, it seems any crappy tire with an A/T marking would have been legal, even before 2014.