You're very confused, aren't you?
Mashiach HaMelekh is the long-prophesied Davidic King who will return all Jews to Israel, rebuild the Holy Temple, and impose the Kingdom of G-d over the entire earth. Does this sound like J*sus to you? If it does then you are very ignorant about chr*stianity, which insists that the messiah came 2000 years ago and that the "kingdom of G-d" is the church. And if this doesn't sound like chr*stianity to you, then I'm afraid you're only familiar with the "Bible chr*stianity" of the American Heartland, which isn't historical chr*stianity at all.
Have you ever considered the possibility that G-d just might be factual rather than an abstract concept clothed in quaint ethno-cultural mythology? The factual G-d isn't bound by the "enlightenment" or the First Amendment. Eventually He will triumph. As a matter of fact, in theory all humanity is already statutorily obligated to observe His laws, which include a ban on all false religions (which include islam and chr*stianity).
It's obvious from what you write and from the information on your home page that you know very little about Torah. Why else would you think Mashiach HaMelekh is J*sus?