YOU SAID:
Yours is fast, but mine is slow
INTO JAPANESE
あなたは高速ですが、私は遅い
BACK INTO ENGLISH
You are fast, I slow
INTO JAPANESE
高速は、私が遅い
BACK INTO ENGLISH
My slow speed
INTO JAPANESE
私の遅い速度
BACK INTO ENGLISH
My slow speed
That didn't even make that much sense in English.