PS3 is almost 9 years on the market and the original model is huge.I mean it'd be weird if some guy came into the house walked past my wii u, ps3, xbone, ipad air, giant amiibo selection, nice tvs to grab my 3DS.
Xbone is huge and is trending to be the least-successful non-Nintendo console since...the original Xbox.
3DS is small.
Thief going for the 3DS is not too surprising.