How were Martin Luther's criticisms of the catholic church similar to those of ulrich Zwingli

Both Martin Luther and Ulrich Zwingli were critical of the control that was exercised by the Roman Catholic Church. These reformers believed that the Bible was the only needed source for spiritual truth. They rejected Rome's claim that the pope and councils of the church were needed as additional authorities to tell people what to believe. In his 67 Articles published in 1523, Ulrich Zwingli said, "All who say that the gospel is invalid without the confirmation of the church err and slander God." That was similar to what Luther had said in defending himself when brought before the Imperial Diet at Worms in 1521: "Unless I am convinced by the testimony of the Scriptures or by clear reason (for I do not trust either in the pope or in councils alone, since it is well known that they have often erred and contradicted themselves), I am bound by the Scriptures I have quoted and my conscience is captive to the Word of God."

Luther and Zwingli differed in a number of ways in their theology, but they agreed in rejecting Rome's emphasis on works specified by the church being needed for salvation, and they challenged the authority of the pope and the Roman Church to make the claims it did which did not come from the Bible.