Big trades happen in the NFL draft. But how is that possible if everyone uses the same chart to measure value and simple arithmetic says someone lost out on the deal? The answer is simple. They don’t use the same chart. Teams with many needs to fill, or needs they can fill just as well later in the draft, will put a very different value on very high picks than a team in search of a particular star or a shot at a franchise QB. The well known Jimmy Johnson NFL Draft Trade Value Chart looks at transactions from the star-oriented point of view.