Why are you digging up such old questions? That was nearly 4 years ago! What a pity my Chinese has not improved in all that time! Pleco is none too good. My advice: first, ask your Chinese friends. Also try Hanping Chinese Dictionary Pro.
这是 ....， 更是 .... this is ..... , but it is also .....
China's total number of Internet users is more than the population of America,
but America's online shopping users make up 75% of America's population,
whereas China's online shopping users only make up about 25% (of China's population)
China's online consumers' annual average spending only represents about one fifth of America's online consumer spending.
Yu Gang believes, this is a (big) disparity, but it is also China's e-commerce (development) potential.