Asus Memo Pad only have 1 core processor, it will choke when play 3d game even not so high details game.
Ainol venus has 4 core but its graphic processor is weak.

My suggestion, buy any china tab with 2 core rockchip processor and mali gpu. It will beat both device above for gaming. For me, I suggest for you to look at Vido n70s. Only rm3++. Good quality.