In December, Samsung said it had shipped one million of the 7in tablet PC, which was made available in the UK in October 2010.
Powered by a 1GHz Samsung Hummingbird ARM-based processor, The original Samsung Galaxy Tab came with 16GB of built-in memory, Wi-Fi and 3G connectivity and front and back-facing cameras. Samsung has since unveiled a number of different sized versions of the tablet PC.
However Andrew Barrow, director of consumer products and pricing for Lenovo Western Europe, told the Guardian that while Samsung may have shipped one million devices to shops, just 20,000 had been sold, subsequently "making a huge loss but becoming known as a major Android tablet manufacturer".
"We don't feel the need to buy share from Apple. If the product sells, it sells," he added in reference to Lenovo's own tablet PC, the IdeaPad K1.
Samsung has since admitted more tablets have been shipped than sold.
"It's certainly plausible that sales into the channel are going to be significantly higher than sales out. The question is by how much, and that does sound like an awful lot," mobile analyst Quocirca, Rob Bamforth, told the Guardian.
"When you walk the streets and take the train you see iPads. Certainly the [Android] figures will be relatively poor. Whether they're that poor, I don't know."
Samsung has yet to comment on the issue.
Lenovo's comments come as the Samsung Galaxy Tab 7.7, the latest tablet PC to be unveiled by the tech giant, has been removed from display at the IFA show in Berlin, after a court banned sales of the device in Germany.