The flaws of Corruption Perception Index

This CPI has merits, and its application to normal countries, such as OECD, is reasonable. 

However, it mixes normal countries with animal farms, so it generates some absurd rankings. 

There is zero chance for the PRC to be less corrupt than India and Ukraine by any means.

The perception used by transparency.org is that of "experts".  This is another example of experts being out of touch. 

Let's use the PRC as an example. Even if we use the regime's own propaganda data and ignore the common belief that every PRC gov official is corrupt, there is enough information to show that the PRC is much more corrupt than Ukraine and India, contrary to the CPI ranking.

We know that the middle school dropout has purged more than 200 generals. It is true that purge is political, but charges are usually corruption, and no one, including Chinese dissidents, doubts that the alleged massive corruption is all true, as expected.

Every general is corrupt, so the middle school dropout can conveniently use corruption as an excuse to purge any general he dislikes.

Let's examine General Xu Caihou, a top-ranking general and Politburo member, who is responsible for overseeing anti-corruption efforts.

It is widely believed that he amassed over ￥100B (over $10B) assets. It is common for a general to receive bribes of tens of millions in total. Ranks can be bought. There is an implicit price list for ranks.

🇺🇦 is a free democratic country. It is true that corruption is its chronic disease. Its vibrant free press has brought down many powerful officials. The bribes received by these corrupt 🇺🇦officials are no more than rounding errors of those of their🇨🇳counterparts.

I do not know what the Economist Intelligence Unit Country Rating is exactly. My hunch, based on reading their reports, is that the rating is primarily related to business risk. The high risk brought by the Rashist slaughter in 🇺🇦 should be unrelated to corruption.

The IMD World Competitiveness ranks 🇨🇳 better than the US in terms of corruption. Keep in mind this rank was pre-Trump. I wonder if the International Institute for Management Development (IMD) has to do this because of having a main office in 🇨🇳

I think the best approach is to put normal countries and animal farms in two different categories and rank them separately.  Animal farms are corrupt by design. 
CPI is not the only ranking with this fundamental problem. The US News and World Report's College Ranking has the same issue.