Nicks isn't in the same class talent wise as Calvin. Calvin, AJ and Fitz are a cut above everyone else in terms of talent. Austin, Nicks and Roddy all are exceptional WRs, but are a distinct tier below the top 3 talent wise.
Lucky enough to have a great writer for the Milwaukee Journal that covers the Packers in Bob McGinn. He previews the upcoming opponent each week. He has been covering the Packers for decades, and has great contacts in the NFL scouting community and with GMs. He uses those contacts frequently to help write his articles. Here's his take on the Giants WRs this week:
Hakeem Nicks (6-1, 215), the 29th pick in 2009, has average speed (4.55 seconds) in the 40 but is more of a downfield receiver. He's a step down from former Giant Plaxico Burress. Nicks is competitive at the ball, has strong hands and isn't afraid of collisions. He is dropping more balls than he should.