It's actually better if you have both because of the point system. If the author has both + is considered skilled labor it should be pretty easy to get in.
Not to be controversial or incendiary, but why would a country with public healthcare accept immigrants that will put a bigger strain on its system? Socialized healthcare does not work if we accept people that never contributed to it with known previous disabilities.
That's the thing, Canada, at least, doesn't even evaluate the cost benefit. They (and NZ and some other commonwealth countries), are pretty ban happy when it comes to those with disabilities, even if the condition is stable and easily and cheaply treatable. I'd pay an order of magnitude more in taxes in CA than my medical costs, but they don't really care.
