Will Peyton Manning be the same without Harrison?

I mean he's had two great receivers and a whole bunch of average people. now they get rid of their best receiver, so poor Reggie has to battle double or triple coverage, so he's no that good of a target if you got three Defensive Backs on him. I see him going to Gonzalez for a lot of his problems, because he's a young and average. What do you think? I don't see him going for 5000 yards and 40 TDs every season, unless they get another monster.