What does the currency conversion have to do with increased taxes?
What taxes are you referring to? Sales taxes in Canada were 15% in 2002, and 13% now in 2013. If you made $1,000,000 Canadian in 2002 that would only be $625,000 US. If you made $1,000,000 in 2013 it would be almost equal. So obviously you're making a hell of a lot more running a show now in Canada than you would have 10 years ago.
WrestleMania X7 in Houston and X8 in Toronto drew virtually identical numbers. Yet despite a 62.5c Canadian dollar, X8 still made more money than X7. So what does that tell you? The cost of goods in Canada are also generally 20% higher than the exact same item in the US. So any extra money given back in taxes is likely covered by the increased cost of tickets, merchandise, etc. vs. a US show.
WWE officials announced an attendance record for Reliant Park of 67,925, resulting in gross receipts of $3.5 million.
Officials announced record-breaking attendance for SkyDome of 68,237, resulting in gross receipts of approximately CDN$6.1 million (US$3.9 million).
Despite any other taxes that might be levied, Toronto can still outdraw 80% of American cities less major markets like New York, Chicago, Detroit, L.A., etc. (and even then it can depend on the venue).
You've got PPV's drawing 10-12,000 fans. I don't know what kind of Fox News propaganda you guys believe if you think an event drawing 10,000 in the US makes more money than a 17,000+ event at Air Canada Centre in Toronto. Nobody's asking for even a PPV every year, but going for years on end without doing a PPV when you're running PPVs drawing 10,000 people doesn't make any sense.