I used to doubt that too but having seen how they have dominated Electronics market and for that matter Mobile market, I am bit bullish about Samsung's performance in Tab market. Rest time will tell.

There's doesn't seem to be a reason to doubt it to me. Samsung has emerged as a top-tier player in the mobile and consumer electronic world.

Apple has been producing retina displays for their phones for almost 2 years now. And they are able to produce them in large quantities.

Meanwhile, if we consider SUB-pixel density and not just pixel density (because creating that many elements and maintaining quality is going to be hard) then it is not clear that anyone else has the ability to even manufacture a similar screen at any sort of commercial level.

LG makes the iPhone 4 screen, not Apple.