Is SIN a bigger issue in Christianity compared to Hinduism?

Once I mentioned 'sin' while discussing Hinduism and someone on internet got offended by the use of word. Is it because Sin in Christianity is far more serious than Hinduism?

I think in Hinduism 'Papam' or sin is not big of a deal. Although that might depend of the nature of Papam. Harming others might lead to worse rebirth but smaller sins such as mental impurities like desires, attachments are not big deals.

I think that person assumed that I am saying Sin is a crime or form of evil, etc.