“Yes, but if there is a Mt. Sinai, that means that G-d gave the 10 Commandments to Moses, that there was an Ark of the Covenant to house the tablets (and a jar of manna and Moses’ staff), and that there was a Temple to house the Ark of the Covenant and to be the place from which the High Priest would lead the services commanded by G-d on behalf of the Jewish People.”
“Muslims already believe that.”
If they believe that, then why would they make such an effort to discredit the FACT that there was a Jewish presence in Jerusalem before Mo ham head? Take a look at a website that exists SOLELY to counter bogus Moslem claims to Jerusalem: http://www.eretzyisroel.org/~jkatz/templemount.html