I have no delusions of Bell being great but he deserves credit when he plays well just as there is no reason to sugar coat his bad play. When people like the coach, GM, former All Pro team mate, and now one of the most respected members of the actual knowledgeable media with real professional experience in player evaluation say good things about his play there is no reason to poo on him. It's in the absolute best interest of this team for him to be successful.
The teams who were in the top half of the league last season in terms of rushing attempts were also the best teams for the most part including the teams that had the most playoff success. These teams also tended to have the top defenses in the league. It's not necessarily a bad thing.
To be fair, Eric Fisher was matched 1 on 1 with a full speed Greg Hardy. He's going to get beat. Bell was facing a 3-4 defense, that honestly didn't show a lot after the first two series.
when players are doing bad, people always say it's just preseason, it'll get better. Think about it the other way, too. Bell is playing well now. Wait until Michael Johnson or someone is screaming off the edge at him at full go.