CN m60tts

Should China’s M60TTS be lowered to 8.7?
Compared to the original M60TTS in the United States, the Chinese version lacks ERA and 774, But they are all at 9.0BR.
The China’s version is not as good as the original US version in terms of firepower and protection, so should we lower the China’s version to 8.7BR or increase the US version to 9.3?