It's just as hard for me to ... as it is for you to ....
... would be every bit as difficult for me as it would be for you to ...
ーIt's just as hard for me to learn English as it is for you to learn Japanese.
「私が英語を習得することは、あなたが日本語を習得するのと同じくらい難しい」
It's just as hard for me to ... as it is for you to ... で「私にとって〜は、あなたにとって〜と同じくらい難しい」と言えます。
to learn で「習得する」
ーMastering English would be every bit as difficult for me as it would be for you to master Japanese.
「私にとって英語を習得することは、あなたにとって日本語を習得するのと同じ程度に難しい」
... would be every bit as difficult for me as it would be for you to ... で「私にとって…は、あなたにとって…するのと同じ程度に難しい」と言えます。
to master で「十分に習得する・マスターする」
every bit で「同じ程度に・同じくらい」
ご参考まで！
カナダ 
