Sales and quantity of bodies sold is not a indication of the best camera. It may be an indication of how well a company markets, brand recognition or other factors.

I write off the opinions of Sony fanboys on forums as possibly misguided. Sales departments create proception and those perceptions are generated by profit. In the US Canon price controls their products. In the local camera shop the owner always reached for Sony or Nikon and never Canon if someone asked about which brand to go with. I asked him why, it is simple the profit margins he can make off the other brand is greater. Salesman and Sales are not a good representation of which brand is best.

I would doubt Sony dumps their camera division, they have about a 50% share of the sensor market. Sony is their own customer, but in business all things are possible to maximize profits. Maybe they shy away from selling cameras to protect one of their customers.

For me what should matter in a debate like this is whether Sony can take a better picture than Canon.