Wouldn't various teas be a better protection than the single Camellia sinensis

The UK has lower cancer rates than the rest of Europe. Is it related to the habit of drinking tea ? " .. when confounding factors like poor diet and smoking are avoided and animals are given nutritionally balanced food, cancer protection by tea clearly can be observed. " http://lpi.oregonstate.edu/sp-su99/tea.html But wouldn't various teas be a better protection than the single Camellia sinensis ?