My understanding is that that would be correct. Other differences, such as baptism, flow from that starting point.

Reformed Baptist Seminary (https://rbseminary.org/) has available for viewing, a series of lectures on Creeds and Confessions, in which this is explained.

Meta4

There is no such thing as preaching Christ and Him crucified, unless we preach what nowadays is called Calvinism. It is a nickname to call it Calvinism; Calvinism is the gospel, and nothing else. - C.H. Spurgeon