American data worsened by roughly a thousand tonnes each iteration and the massiveness of the figures was worthy of the repetition it would receive if compared with Poland, Ireland, Portugal in one paragraph and with the Asian countries in the next paragraph.

麻烦各位老师帮我看一下这个句子，it would receive是定语从句吗？它的先行词是哪一个？如果先行词是repetition, 那么这句话意思该如何理解？