It was feast or famine for investors in Chinese Internet retailers this past week. Shares of online bookseller Dangdang (NYSE:DANG) soared 37% after posting strong quarterly results, but LightInTheBox (NYSE:LITB) went the other way after once again disappointing the market.

LightInTheBox slumped 22% on the week, and you have to go back more than two weeks to find the last time the stock closed higher on a single trading day. LightInTheBox went public last year with an interesting model, sourcing fancy cocktail dresses, housewares, and other merchandise cheaply in China but selling them largely overseas. Europe accounts for nearly two-thirds of its sales.

Unfortunately, it seems as if every report in LightInTheBox's brief public tenure has been a letdown, and it was another meltdown this time around. Sales growth of 22% fell short of Wall Street expectations, and the pros also weren't betting on such a large quarterly deficit. 

Oppenheimer is not only downgrading the stock but also nixing its target price. Pacific Crest is also advising its clients to remain on the sidelines. The stock took a beating, but revenue growth is now expected to decelerate to the high single digits during the current quarter.

Adding insult to injury for LightInTheBox, Oppenheimer raised its price target on shares of Dangdang after its healthy report. The dot-com darling returning to profitability during the period, stunning analysts that were bracing for more red ink. Sales also come in stronger than anticipated, and the same can be said about its guidance.

Dangdang and LightInTheBox were polar opposites for the quarter in nearly every performance metric, and that opens the speculative door to see how Vipshop (NYSE:VIPS) fares when it reports after Monday's market close. To be fair, it shouldn't disappoint. Vipshop has been the fastest growing of the three -- by far -- and it's also been the one's that consistently profitable.

Analysts see the flash sale speedster growing its revenue by 87%, with profitability climbing even faster. Don't lump it in with LightInTheBox, which sells primarily to Europe and the Americas. Dangdang's a local provider of markdowns on fashionable apparel items. There's never a shortage of suppliers with overstocks, and Vipshop has established itself as the place to be score those bargains.

The smart money has to be on Vipshop following Dangdang -- not LightInTheBox -- and doing an even better job of distancing itself from the pack when come Monday night.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.