There are huge differences between JW's and other Christian denominations. Most Christian denominations accept other denominations as Christians, too, and don't think they exclusively have "the truth." Other Christian denominations accept that others can choose a different church and not be shunned or considered apostate. Most Christians are in favor of college and self-improvement and seeking therapy if one is troubled.
Those are the most important distinctions. Other denominations don't require their adherents to exist in a living hell.