Your previous comment was a bit confusingly worded, I, and presumably the commenter you just replied to, read it as "more than 70-80% of the time" it struggles;

Your previous comment was a bit confusingly worded, I, and presumably the commenter you just replied to, read it as "more than 70-80% of the time" it struggles; rather than your intended meaning of it struggling to do better than correct 70-80% of the time.