Why are Jews so anti-Christian in their beliefs, the ones who follow the Talmud?
There are several possible reasons for that. Ever since the debacle with Helenization in the 2nd and 3rd centuries bc, Jews have have made it a strong cultural point to avoid assimilation. It is the only thing that kept them from disappearing after being forcibly removed from their homeland in 135 ad. No other ethnic group has lasted that long without a homeland.
Another more spiritual reason is that the devil knows that one of the requirements for the return of Our Lord is a critical mass of Jews who believe that Jesus/Yeshua IS Messiah and Divine and welcome HIM back to Jerusalem. (MAtt 23) By keeping the Jews SOOOO opposed to Christianity and promulgating the lie that if you believe that HE is Messiah you are no longr a Jew, then the 2nd coming will never take place.
How different is Messianic Judaism,from actual Judaism?
That assumes that MJ is NOT a real Judaism. It is.
Dr Dan Cohn-Sherbok, a Reform Rabbi who wrote a book on Messianic Judaism several years ago (and has spoken at a few MJ convocations) says there are several judaisms, including Orthodox, chassidic, conservative, reform, secular, and Karaite.
The primary difference between all those and Messianic is the Messianics' belief that Yeshua/Jesus IS the divine Messiah. There is a wide variety of beliefs in MJ, pulling from many of those other judaisms listed and a variety of church sources.