How can that be true? Its not. The opposite is true. According to Christianity, non Christians are not equals in the eyes of God. One absolutely has to become a Christians in order to achieve salvation. Judaism how ever doesn't emphasize the afterlife, etc. What we do here on earch is what's really important. As for "chosen", you have a common misconception.
"Chosen" doesn't mean "privileged" or "entitled." It refers to a unique covenant that you have with G-d. This is responsibility. For example. Gentiles have to follow the 10 commandments, while Jews had to follow something like 600+ (half of which had to do with the Temple that was destroyed and therefore can't be excersised any longer).
I understand all of that. At heart, it's still a two-tiered view of humanity with an intransigent exclusivity. Jews still are an Elect and there is no changing the fact I can never be privy to that Covenant regardless my manifesting a genuine obedience thereto out of enthusiasm, longing or love.
(This is why Christ refers to himself as the New Covenant into which any man may choose to obligate himself and take on the responsibility of maximum obedience to God.)
I don't much care what your Baptist friend or the apostate Catholic had to say. Both are in error, plain and simple.
I have some Jewish friends who have no problems eating non-Kosher food, don't keep the Sabbath and tell me abortion is okay. Just because they've decided they can believe thus and still be "Jewish" doesn't tempt me for one moment into believing their Personal Interpretations of Judaism they've tailored to fit their own Personal Faith is anything like obedience to Judaism.
Like I said ... I'm one for primary sources and seek the most objective voice I can find using a divining rod tuned to humility, charity and good cheer. Those seem to be the folks who've the firmest grasp on enduring truth, IMHO.