Yes, Canada is another country.
There is a Canadian Equity, that is seperate from American Equity.
You can be on an Equity Contract and tour internationally. (Recently, I performed in England on an American Equity Contract.)
But, I believe, every show is different, and the specifics should be discussed. Most likley, it seems, it was an American Production touring to Canada, which I believe can be done on an American AEA contract.
But there are always quirks.
(Like it's wierd to me that American AEA only covers English language performances - so if you are doing a performance in another language, it technically doesn't fall under AEA . . . so you have to come up with a whole new set of rules. But I digress.)