As it is, I am not completely sure what you are asking. You say "do you think retail stores' sales less then web sites' sales." Are you asking whether retail stores have greater sales than web sites? If so, the answer is that they do not yet.
As you can see in this link, the sales made by websites are nowhere near to those made by actual retail stores across the country. The link tells us that only 8% of all retail sales in America were made on line. This shows that websites have a long way to go.
However, web commerce is increasing its share of the market. The economist.com link also tells us that consumers aged 24 to 35 already do about 25% of their shopping online. This looks to increase in the future.
Even though ecommerce is growing, it has a long way to go before it exceeds sales from brick and mortar stores.