Now you’re going off topic, however I’m not denying that salvation can be attained outside of the Church. Baptism is necessary for salvation.
catholic.com/tracts/the-necessity-of-baptism
The Catechism explains that baptism is needed for salvation because it washes away sins. So, while it is not heresy to say that those outside of the Church might be saved, it is heresy to deny the sacramental grace of Baptism and it is heresy to equate other religions with the Catholic Church as decreed in
Dominus lesus, approved by Pope John Paul II and published in 2000
You seem to be equating other religions with the Church which is heresy. The Church is superior to all other religions. Because through the Catholic Church salvation is extended through the world.