Canadian Immigration Visa offers you Permanent Residency in Canada whereas the H1B offers you temporary work permit which cannot be extended over 6 years

Canadian Immigration Visa allows you to apply for any advertised jobs in Canada allowing you more choice and negotiating power! where as with the H1B, you are dependent on a sponsor who employs you.

Canadian Immigration Visa allows you to own your own business in Canada whereas the H1B does not allow you to own your business!

Canadian Immigration Visa holder is entitled to Unemployment Insurance and other incentives provided by the Government of Canada for its residents where as a H1B holder has to leave the country if he looses his job.

Canadian Immigration Visa allows the holder to sponsor his/her family members for family unification whereas a H1B Visa holder can sponsor his/her spouse only!

Canadian Immigration Visa is a step closer to Citizenship of Canada where as a H1B visa holder is not entitled to apply for citizenship!