Is this the truth about Moses?

"In the 3rd century B.C.E. Greek "History of Egypt" by the Egyptian priest Manethos,as excerpted by the Jewish historian Josephus,the inhabitants of Jerusalem were decendants of the impious Hyksos who had terrorized Egypt for 511 years until forced out by King Thutmose. They occupied Egypt again 518 years later and in an alliance with leprous slaves led by a Heliopolitan priest Osarseph-Moses,polluted the people,mutilated idols,and pillaged temples for 13 years until expelled by Amenophis and his son Ramses." Sounds a little different from the Judeo-Christian version. Opinions?