Actually, more Scots went to Canada! In the middle of the 19th century, over 50% of Scottish emigration (not counting moving to England of course!), was to the US followed closely by Canada (largely thanks to forced emigration as highlanders were forced from their land to make way for sheep), New Zealand (the nation with the highest proportion of Scots per capita other than Scotland at the time!) and Australia! Not that Scottish emigration was insignificant. After all, it was the Scot Lachlan Macquarrie who turned Australia into what it is today. A nation, rather than a penal colony. It's worth noting too, that the first 2 prime ministers of Canada were Scots (John MacDonald and Alexander McKenzie) and that another 3 of the next PM's of Canada hailed from Nova Scotia where 59% of the population identified themselves as of Scots heritage at the time.
I kinda wish my ancestors were the ones kicked off their land and sent to Canada! My wife's family are actually more Scottish than me which is ironic. When her great grandparents first arrived in Cape Breton they didn't even speak English or Scots. Only Gaelic!
Canadian history is actually really fascinating. I'd recommend to anyone that they pick up anything they can read about pre-confederation Atlantic Canada.