I actually think it's closer than some people are making it out to be. If you're going on stats then sure, he had a short career and the numbers match up with Nicks so why one and not the other is a good point. But Cruz's story, and his relationship with the fans, makes him different than a lot of other players. After all, Terrell Davis is a hall of famer despite only having 4 really outstanding seasons before injuries robbed him of his future.
Cruz came out of nowhere to become an impact player for the team. His 99 yard TD was legendary but so was the performance against the Niners and that ruthless defense in the playoffs. He was one of the 3 or 4 best players on a Super Bowl winning team. And even last season which was not a great season, continued to make clutch catch after clutch catch.
If the Giants held a halftime ceremony 5 years from now where they were putting Nicks up in the ring of honor we'd mostly wonder why they did it. But if they did the same thing for Cruz? We'd be chanting CRUUUUUUUUUUUUZ for 15 straight minutes. So while I'm not convinced they SHOULD do it, I'd be totally fine with it if they did.
However if he signs with the Eagles or Cowboys or Redskins this season and turns back into the Cruz of old for them...I take back everything I just said.