I don't understand your point. What are you saying? That the sales of games should matter and not the sales of consoles? Ultimately one buys a console because of the games of course but still if you don't buy a console, you'll buy ZERO games for that console so that's how console sales are important too.
As for figures, it's just like for every other product, it's interesting because we want to know if a system is going to be successful or not. A console that sells well can be expected to have more games and stay longer in the market.
As for focus, what's wrong with focus on both games and console sales? Both are related, the more consoles sold the more games sold too cause more people having consoles means more games will sell.







