What you’re really paying for there is the reputation.
In terms of what he brings, he will, like @warlock says, be a better coach, and his higher DDM will make him more effective at it. As a rule of thumb, unless I inherit someone with terrible attributes, I tend to review my staffing at the end of contracts, so as to save at paying them off, as you’re generally only going to see marginal gains anyway unless you’re smashing up through leagues.
If Sampaio is approaching the end of his deal, and you can’t find someone as good or similar as Sacramento for less, then yeah, I’d take the plunge, otherwise keep your powder dry for a while.