Soyung is correct. I think Spanish is not more difficult than English, one reason being that pronunciation is always the same in Spanish. I mean, the spelling indicates the pronunciation each and every time. Having said that, I believe a person may find one language more difficult than another, based on the person's native language. For example, Finnish is a language not based upon Latin, and it also has many different grammar cases. So Finnish is especially difficult for an English native speaker.