Costco vs. Sam's vs. BJ's

From TheStreet.com,
Did you know, on average, consumers visit Costco 2.8 times/month, compared with 2.37 times/month for Sam's and 2.1 visits/month for BJ's.

Additionally, shoppers spend $92.82 each time they visit Costco, 55% more than Sam's, 59% more than Walmart, and 70% more than BJ's.

What does this say? It tells me that Costco shoppers are more loyal to Costco, and they spend more there than shoppers at other comparable club stores. Just an interesting tidbit for you Costco fans!