I think in any place where you can get real vine ripen tomatoes (heirloom or not), you will get pretty good quality tomatoes. Most supermarket tomatoes do not taste great, because most of them are picked at green stage, shipped and then gassed with ethylene.
Since China is the largest tomato producer in the world, this also means that more people will be lucky enough to have access to farm fresh vine ripen tomatoes.
Also because Chinese is the largest producer, it would mean tomatoes are quiet cheap in China (compared to other fruit and vegetables). This can easily drive a national cuisine in a certain direction.
