Not at all. I would expect a Church with it set of beliefs to consider itself correct. That does not imply that everyone else is totally wrong, just not Catholic. YMMV.
Pius 9, Quanto Conficiamur Moerore: “Also well known is the Catholic teaching that no one can be saved outside the Catholic Church. Eternal salvation cannot be obtained by those who oppose the authority and statements of the same Church and are stubbornly separated from the unity of the Church and also from the successor of Peter, the Roman Pontiff..” -http://www.papalencyclicals.net/Pius09/p9quanto.htm
Pope Pius IX (1846–1878), Encyclical Singulari Quidem March 17, 1856): “There is only one true, holy, Catholic Church, which is the Apostolic Roman Church. There is only one See founded on Peter by the word of the Lord, outside of which we cannot find either true faith or eternal salvation. He who does not have the Church for a mother cannot have God for a father, and whoever abandons the See of Peter on which the Church is established trusts falsely that he is in the Church. (On the Unity of the Catholic Church) http://www.papalencyclicals.net/Pius09/p9singul.htm