Don't confuse biggest company/most sales with "best". Unless you consider GM the best cars and Budweiser the "best" beer on the planet (it's actually The Chinese beer, Snow). Interestingly, in almost all markets, the "best" brands are not the mass appeal brands. Maybe knowing how to sell the most cameras does not mean knowing how to make or sell the best cameras.
The selling’s says how good a product is. My business economics teacher always told us that and he often compared this with Windows and Macintosh . He also mentioned that the Czechs make the best beer - Don't know if something of the mentioned is true, but I definitely agree with the beer statement
kind regards, eL