YOU SAID:
Corn is not that good actually.
INTO JAPANESE
トウモロコシは実際にはそれほど良くはありません。
BACK INTO ENGLISH
Corn is not really that good.
INTO JAPANESE
トウモロコシはそれほど良くはありません。
BACK INTO ENGLISH
Corn is not so good.
INTO JAPANESE
トウモロコシはそんなによくありません。
BACK INTO ENGLISH
Corn is not so good.
That didn't even make that much sense in English.