I had applied for a PhD to some colleges in the US, and am waiting for admission results. A professor at a college that I am hoping I am accepted at has responded to my queries of "Is my application likely to be accepted, or should I just accept school B's offer?" with the same answer "your application will be considered in the second round, so you should wait for it. However, I cannot make any promises".
I feel that if the professor thought I had a good chance of getting in, he might have stated so in his replies. "I can't make any promises" seems to be a polite but safe reply, indicating I might be accepted, but thechances do not appear too bright. Should I just accept school B's offer?