Another person/company could file a provisional patent for the exact same process, idea etc and have a slightly different title and description. From the USPTO we find:
A provisional application is not required to have a formal patent claim or an oath or declaration. Provisional applications also should not include any information disclosure (prior art) statement since provisional applications are not examined. A provisional application provides the means to establish an early effective filing date in a later filed nonprovisional patent application filed under 35 U.S.C. §111(a).