Any mountain with bad condtion is not going to be good no matter how the runs are laid out.
I think Whistler is rated number 1 resort because of the village and hospitality.
They are rated number 1 resort not number 1 snow. No mountain has powder for 6 month straight. Every mountain has good days and bad days, you happen to pick 3 bad days. I like Whistler for all the stuff you can do after skiing (restaurants, bars, movies etc). At other resorts you are stuck in a hotel rest of the nite. And when it snows the mountain is also awesome and the whole resort has good atmosphere and people. If you want to go somewhere just for the best snow condition, you should go to MT baker or Canadian Rockies, but you will have absolutely nothing to do after skiing.