No, they have not. But that storm has also made Alta ski patrol much more cautious to open avalanche terrain over the past week and a half.
Also, your first sentence did not totally address the issue. It spoke only to the effect, and not to the cause. While Snowbird is more difficult to cover, without a doubt, it has also been my observation that Snowbird Ski Patrol is much more conservative about opening terrain than Alta ski patrol is. Alta Patrol has no reservations about letting you step over rocks, roots, etc. to get to certain terrain if that is your desire. It has been my experience that Snowbird Ski Patrol won't allow you access to terrain unless cover is as close to blemish free as possible. This magnifies the difference between the two resorts for the first one third of the season.
Anyone who saw Alta terrain like Liftline, Race Hill, the Saddle Traverse, etc. during the first half of December knows what I'm talking about.