The way I make it and the way they make it at the store are completely different.
ーThe way I make it and the way they make it at the store are completely different.
「私が作るのと、店で作るのとでは全然違う」
completely different で「まったく違う」
例：
My rice omelet and the rice omelet that you order in a restaurant are quite different.
「私のオムライスとレストランで注文するオムライスは全然違う」
ご参考まで！
カナダ 
