You're right, they must be lying about their revenues to shareholders, which is what analysts derive unit shipments from.
Samsung stopped giving out unit sales number years ago. Just like Apple doesn't break down unit sales to different models. Why that must be because they don't want you to know the truth right ? That the lowest end model is the biggest seller and hardly anyone buys the 4S ? Of course not, that's just pure conjecture from people trying to find conspiracies where there are none, on BOTH sides of the debate (if you pick a side, you're wrong to start with, but let's not go there).