YOU SAID:
A bird in the hand is better than 100 in the air.
INTO JAPANESE
手の中の鳥は、空中の100より優れています。
BACK INTO ENGLISH
Birds in the hands are better than 100 in the air.
INTO JAPANESE
手の中の鳥は空中の100よりも優れています。
BACK INTO ENGLISH
Birds in the hands are better than 100 in the air.
That didn't even make that much sense in English.