I have received an invitation to apply for PR from Alberta provincial nominee program office. I am undecided whether to migrate to Canada or stay in USA and wait for my GC approval.

I am currently working in a US company and currently in second stage of my CG processing. It will take at-least 2/3 years before i get my green card. If i apply for Canada under provincial nominee program now it will take 6 to 8 months to get my PR. 

My main worry is i will have to start everything from ground zero if i move to canada. and the advantage is i will become a canadian in 3 years.

So guys do you think it is worth moving to Canada rather than waiting for 2/3 years for green card ?