Both the NITs Jalandhar and Jamshedpur are equally good in all aspects. Be it faculty, placements, rankings, curriculum or facilities, both the NITs give each other tough competition, NIT Jamshedpur will give some extra benefits because it’s like:
Strong alumni base as it is older
Better location as it is managed by TATAs
Covers major industrial areas of our country so better opportunities.
The ultimate factor to decide should be your proximity and regional parameters.