iPad mini 2 release date has been hinted to be around late Q3 or Q4 this year. The Nexus 7 refresh is expected to arrive around the same time. Rumours indicate both devices will feature the same pixel density in their screen displays. Which of these small tablets will win the battle of 2013 upgrades?

Dutch website MobiLeaks recently teased fans with some supposedly leaked Apple iPad mini 2 specs. In its report, the iPad mini 2 remains a 7.9-incher device. Retina display, a highly demanded feature, will reportedly give the new mini a 2048 x 1536 resolution for a pixel density of 324 ppi. (The current mini screen pixel density is at 163 ppi.)

Meanwhile, a Digitimes report indicated shipments of a Nexus 7 will kick off towards the end of June 2013. AU Optronics reportedly took care of its 7-inch low-temperature poly-silicon (LTPS) panel.

"Co-created by Google and Asustek Computer, the second-generation Nexus 7 will start shipping the end of the second quarter and is expected to hit market shelves in the third quarter," the Digitimes report said.

In its anticipation commentary, SlashGear.com speculated on the screen display of the new Nexus 7. "This version of the device will have a lovely new 1920 x 1200 display on its front along with a new set of innards - retaining the NVIDIA Tegra 3 quad-core processor too, we must expect," it said.

If SlashGear got the screen display figures right, this means the new Nexus 7 will sport a pixel density of around 323 ppi. On paper, both devices are virtually equal. How each device would actually stack up against the other remains to be seen.

The iPad mini 2 will reportedly retains its 7.9-inch screen. The new Nexus 7 will also keep its 7-inch display. That said, here is one aspect for the gadget shoppers to consider. Inside the hood, there is a bigger factor to consider: Which system is more robust? Factor in battery life and it gets even more interesting.

The battle of 2013 small tablet upgrades will be fierce. Android fans will go against Apple fans with everything the new Nexus 7 has to offer. Can the iPad mini 2 win in the specs competition?

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