If Sanu gets $7 million a year then Marvin Jones at $8 million is a steal. In reality, both of those deals are totally ridiculous. Edelman is making like $4 million this year.
The salary cap is rising, and teams are free to offer contracts to players that seem ridiculous, but which really are "market" deals.
All your point shows is that Edelman is a GIGANTIC bargain right now.