As'salamu Alaykum Everyone, Brother Rashid, the appoach of brother Egyptian is simple as that Being technical Messiah, the Messiah predicted in OT is impossible.
Prophet Mohamed "pbuh" is like unto Moses (at least we Muslims believe so)....
I know that you believe that the Whole Bible is written by imaginary people and I like your approach in some terms but What do you mean by "At least we muslim believe so"? You should either deny it whole (that the Mose like Prophet was Muhammad) or accept it whole and There are numerous similarity between them.
1. If I am not wrong then Both were First Prophets to their People after their Patriarch, Prophet Muhammad after Prophet Ishmael and Prophet Moses after Prophet Jacob (though you can consider Joseph between them but I think that he was also Patriarch)
2. Both were Worriors.
3. Both were King-like Judges.
4. Both bring a new law.
5. Both had wives and a Family.
and many more.