The difference between Ptolemy III and Ptolemy XIV was:

Ptolemy III ruled over a kingdom of peace and Ptolemy XIV oversaw the development of beautiful architecture.
Ptolemy XIV married a human black widow while Ptolemy III expanded his kingdom to Babylonian.
Cleopatra and Mark Antony partnered with Ptolemy XIV but Ptolemy III built a force with the Egyptians.
Ptolemy III ruled over a peaceful kingdom and Ptolemy XIV attacked Octavian

Difference between Ptolemy III and Ptolemy XIV was the following

Explanation:

Ptolemy III ruled over a kingdom of peace and Ptolemy XIV oversaw the development of beautiful architecture. Ptolemy XIV married a human black widow while Ptolemy III expanded his kingdom to Babylonian.Cleopatra and Mark Antony partnered with Ptolemy XIV but Ptolemy III built a force with the Egyptians.Ptolemy III ruled over a peaceful kingdom and Ptolemy XIV attacked Octavian.Ptolemy III Euergetes  was the third king of the Ptolemaic dynasty in Egypt from 246 to 222 BC. The Ptolemaic Kingdom reached the height of its power during his reign.Ptolemy XIV was a son of Ptolemy XII of Egypt and one of the last members of the Ptolemaic dynasty of Egypt.