I don't see why. I think you may be drawing a conclusion that isn't borne out by the text of the article nor by CHC's operating philosophy.
CHC's goal is, where possible, standardization across all operations corporate-wide for numerous reasons, to include economies of scale and rationalization of supply chains.
When EASA and TC regulations differ, CHC will utilize the more restrictive, not the less, just as would be done where a company OM is more restrictive than local operating regulations (or vice-versa). This would seem to me to mean in practice that a component overhauled at one of CHC's facilities can legally be utilized on any aircraft in the CHC fleet, regardless of the registry of the aircraft and country of operation. This can help optimize levels of inventory, reducing inventory holding costs and other costs. I don't see anything in that article that would indicate the quality level of maintenance would decrease.