PS2 Vs. NDS Gap Chart

[Seece]

Thanks to spurgeon for the idea of a DS Vs. PS2 gap chart, as we don't track weekly PS2 sales now I've used shipments, so this will be incoporated into my January, April, July and October Gap Charts.


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I'm looking to expand my monthly gap charts and want your suggestions!

Current charts are

X360 Vs. Wii - USA
PS3 Vs. Wii - Europe
PS3 Vs. X360 - Global
X360 Vs. Wii - UK

I'm also debuting a 3DS Vs. Vita - Japan

The requirements are:

lower selling LTD platform has to be currently selling above the higher selling LTD platform (ie getting somewhere ...)
realistic chances of it happening, I'm going to need a good argument to add Wii Vs. PS3 - Japan for instance.