This is a big data statistic. For example, 137 has 30,000 accounts. However, 136 may have 100,000 accounts, and the airdrop is not enough to distribute. So 137 can distribute a bit more money to motivate you to keep increasing the volume for the next airdrop. The data looks good too. Anyway, you will find it’s just like a lottery; after the statistics are completed, the results are announced.