Look, Cutler has a stronger arm than Rodgers period. There is no debate. But Jamarcus Russell has a stronger arm than Rodgers too. So does Matthew Stafford. That doesn't mean much like DH says.
As far as young QBs go, Rodgers and Rivers are the top two. Personally, I really like Matt Ryan. I think he'll be great and I've said that here before. But the point is to say that Rodgers is there now. Cutler has potential as well, but the biggest problem with him is consistency. Fair or not, Cutler is very much like Brett Favre was in 92-94. We'll see whether he can develop like Favre did, but there are similarities there.
The biggest thing Cutler needs to show is patience. He doesn't need to create everything with his arm. If it's not there, dump it off. Thus far, he's done that this season. Last year, he did not.