Sony PS3 catching up to Wii in Japanese sales

[Dolla Dolla]

Uraeus said:
Actually you do not need to outsell someone to catch up. First of all the original article seems to use the term in the context of weekly sales. So they can mean catch up in weekly sales, which is different than lifetime sales (duh :).

Secondly, in terms of lifetime marketshare you do not need to outsell someone to 'catch up', you only need to do so to overtake. You just need to improve your sales ratio to be better than the historic one to start catching up in terms of market share. Of course if you actually outsell your competitor you will speed up the process of catching up in terms of market share a lot. Seriously people this is basic mathematics. Just to make it very simple. If you have lifetime sales of 50 units and your competitor have sold 100 units you will have a market share of 33% while your competitor has a market share of 66%. If the next week you sell 90 units and your competitor sells a 100, he still sells more than you, but your market share still grows to 41%.

Ah, so percentages are important?

Nice. And we sillies thought it was just the raw numbers!