What I posted was the official news release from WestJet so your guess is as good as mine. ?
But according to the following it does appear he is qualified for the title of Captain.
AuthorJeff Martin
Jeffrey (Jeff) Martin joined WestJet in September 2018 as Chief Operating Officer (COO). As COO, Jeff is responsible for WestJet's Flight Operations (including the Operational Control Centre), Guest Experience (Contact Centre and Inflight), Airports, Technical (Maintenance) Operations, and the business strategy and execution of WestJet Encore. Jeff comes to WestJet with more than 28 years of extensive commercial aviation and operational experience, having most recently served as Executive Vice President of Operations, where he was responsible for Technical Operations, System Operations, Safety, Security, Flight Operations, Training and Regulatory Compliance for the sixth largest airline in the U.S. Prior to that he held various leadership roles at Southwest Airlines, where he started as a pilot and, over two decades, progressed to Vice President of the Operations Coordination Centre. Throughout his career, he has maintained his currency as a line pilot and civilian flight instructor and continued to fly. He maintains an Airline Transport Pilot Licence and is captain qualified on the DC-10, Boeing 737 and Airbus A320 aircraft. He also served in the United States Air Force flying KC-10s prior to beginning his commercial aviation career. In addition to his work in the aviation industry, Jeff has been a board member at LaSalle Hotel Properties since October 2016. Jeff and his wife, Susan, have relocated in Calgary and look forward to taking advantage of WestJet’s growing network out of the airline’s YYC hub. Jeff’s passions also extend beyond all things aviation, and often involve adventure and competition, as he enjoys sailboat racing and cycling.