Why a few more Chinese cruisers would not reverse the 1894 war

Would several additional Chinese cruisers have changed the First Sino-Japanese War?

No; the added ships would not overcome the scale by which the Chinese fleet remained outnumbered.

The counterfactual adds a mixed group of cruisers to China's fleet for the First Sino-Japanese War. The reinforcement would not change the result because the force would still be heavily outnumbered. Total fleet balance matters more here than the presence of a few individually useful hulls. Training, readiness, and campaign decisions are not assessed in this brief exchange, so the conclusion is a narrow judgement about numerical scale.