On the 1990 Fleer Canadian in my Alex Cole collection, there is only one tiny difference, with no French text really anywhere on the card. The difference is in the copyright line on the very bottom of the back of the card:
Regular says: (C) 1990 FLEER CORP., PHILA.,19141 PRINTED IN U.S.A.
Canadian says: (C) 1990 FLEER LTD./LTEE PTD. IN CANADA
Richard