Samsung Galaxy Tab Pro, the big and powerful tablet which the Wall Street Journal labeled a "school cafeteria lunch tray," is a close relative of Samsung Galaxy Note Pro. The latter device is a 12.2-inch tablet that comes with a stylus and priced at $749.99. The Galaxy Tab Pro sells at $649.99 and does not ship with a stylus.

Other than that the two are alike. Their operating system is Android 4.4 KitKat and both have quad-core processors and 8MP cameras. The 12.2-inch display is what their maker claims to have over four million pixels.

Galaxy Note Pro is positioned by its maker for professional users. It is more in line with iPad Air, Apple's high-end tablet with a big, colorful and firepowered screen. Darrel Etherington of TechCrunch got a closer look at both Note Pro and Tab Pro in January and loved what he saw.

Etherington's impression lies more on the innovative Magazine UX launcher, that re-imagines the Android tablet's basic home screen with a design more alike the one on Windows Phone. It features a multi-window mode that lets users play with up to four windows with different active content - on a single screen.

Samsung Galaxy Tab Pro is priced $640 and shipment commenced on March 9. Customers could already place orders online in advance of its release.

Meanwhile, American IT research and advisory firm Gartner Inc. indicates that the iPad, the king of the tablet market, will give way to Android tabs such as this Galaxy Tab Pro. From 195 million tablets sold in 2013, 62 percent or 121 million devices are tablets that run Google's Android OS.