You will. If you're at UW and/or have a competitive portfolio you can expect entry-level US (read: Bay Area) offers to be about 2x Canadian ones in terms total comp if you ignore exchange rate (more if you include it). If you're good, that's going to scale to about 3-5x what you get in Canada after a few years.

And don't let anybody get on you about the cost of living. You can live pretty inexpensively in San Francisco, as you can in any city, if you're willing to make some sacrifices (roommates, transit).