Briggs was a punching bag that night and nothing more. Danny Williams is the last time he threw with power.
He failed to knock out Briggs, failed to knock out Chisora, and failed to knock out Charr. He had to rely on a ref stoppage against Adamek. Just a few things off the top of my head. Compare that to the Kirk Johnson or Danny Willams fight to see the difference.
Id an excuse klitards have made up when Chisora roughed him up. Power isn't lost over night. Briggs was put into intensive care and Adamek was lifted off his feet with a jab.
I wouldn't say he doesn't have any power, but I think he focuses on a high volume of 'arm' punches over sitting down on his shots these days. I'm sure if he wanted to he could still have some pop, but to do that you need to put your body into the punch, generating torque through the legs and into the upper body. With the injuries to his legs and shoulders that he's suffered, I'm not sure it's worth the risk when he can dominate his recent standard of opponent with high volume and accumulation.
I agree too. Let's admit it, the are the product of a dead division. Nothing more, nothing less. This is the cheeseburger dwarfs HW generation. The Klitschkos wouldn't have been relevant in the 70s or 80s. That's a fact.
The level of power is not the problem. The problems are: (1) injury proness and (2) deterioration of speed. The strong suits that remain are: (1) ring IQ (2) grit/toughness (3) meanness and (4) strength.