Portuguese is a branch of Spanish, that is, dialect. Only in the centuries after Portugal's independence, Portuguese itself has made many changes, which has made a big gap between Portuguese and Spanish. Even so, the two languages belong to the same language family and have many similarities or similarities.
in terms of application scope, Spanish is slightly superior; As far as pronunciation is concerned, Portuguese is better; When it comes to grammar, the two are similar.
Therefore, it is very difficult to compare the difficulty of these two languages, mainly depending on your needs and purposes before making a choice.
When it comes to French and Italian, in fact, many European phonetics are interlinked. After all, our ancestors are all on the same branch. But just like the relationship between Chinese and Japanese, you can read a few Japanese words, but you dare not say that you can speak Japanese. So learning a language well can only help you learn more languages, but it can't make you do it once and for all.
Similarly, learning Spanish doesn't mean you know some French or Italian.
do you understand?