So, what are you thinking....2 for 1 heart transplants.
Population seemed to be the most obvious difference I noticed.
That, and the fact they put salt peter in your Molson beer.
I'd guess our (illegal) immigration alone, beats the (legal) numbers in both countries.
As for the whole density thing....do you really think you have cities denser than New York City or Los Angeles?
I'd be interested in any info you have. I don't really know.