I think it's a little low. Normally a highly recruited expat gets his/her comparable salary plus 25% and plus housing, education, etc. I am baffled as to why someone would come for the same salary when there is no job security, retirement benefits, transferrable health care, etc. If you are Canadian you will have to divest yourself of any property, bank accounts, etc to be tax-free. If you are a US citizen you will owe taxes on the fair market value of all your benefits, including housing, education and airfare.
Mandi