I never was a big fan of the classic(Steward version oversized) Lewis but he could dominate an incredible strong-maybe the strongest heavyweight- era. He was lucky but he could rule the division.
Hmmm. If we're talking ca 1997-2003, there is that loss to Rahman. He would emphatically avenge it, yes, but he was sparked out by Rahman. Could you say he dominated even despite that loss? Perhaps.
The heavyweights are a different type. The dominating guys there in the last 10-15 years were bigger than most of their challengers. Lennox or Vlad had size advantages for most guys. That is a big advantage, and Steward knew how to use the size to win. He could improve anyone.
I would say likely NO, and have done many times. I'm not sure crack-head McCall, Briggs, Grant, Mavrovic, Akinwande, Rahman (who went 1-1), Golota, Botha and old Tyson even constitute a "strong era". Holyfield was past his prime in 1999, but he's admittedly a strong opponent, a great fighter still quite capable. Tua probably makes the grade as a strong contender based on his serious power. Vitali is up there too but Lewis didn't really dominate him at all, if that matters. If we extend Lewis's resume/era back to include 1992-1996, he's got a few more good wins,but also a loss to McCall, a razor close win against Mercer .... and the likes of Bowe, Holyfield, 1996 Tyson, were much bigger factors then than later on ... so Lewis was even less dominant that stage.
I certainly wouldn't say he dominated from, say, 1992 to 2003. For that he would at least have had to beat Bowe and younger and better versions of Holy and Tyson. Maybe then I could see past the razor close win over Mercer (which for me in essence was a draw), the loss to McCall, which wasn't really satisfactorily avenged, and the loss to Rahman, which was satisfactorily avenged. Probably not, but maybe. Since he didn't beat Bowe and only a past prime Holy and a pretty washed up Tyson, I can only perhaps grant him dominance over the years where they weren't anymore the top guys in the division, and that's from ca 1997-1998. But still a big maybe, since he lost to Rahman and didn't beat top contenders like Byrd and Wlad. As for that era, I felt that I could call it strong since prime Vitaly was a contender. But that's a maybe as well.
Honorable mention: Tyson wasn't old and he was younger than Lewis.Golota who outclassed Bowe two times was another very good win. All in all i think an era with fighters like Lewis, reigning champion Holyfield,still dangerous Tyson, prime Vitali Klitschko and lots of decent athlete must be a strong era. I don't know another era when Lewis,Holyfield,Tyson and Vitali quality fighters competed in same time. But can you say a stronger heavyweight era ? I doubt it. Lewis beat the reigning champion Holyfield , shot but dangerous Tyson and the prime Vitali Klitschko and he beat lots of actually decent/good fighters like Mason,Ruddock,Tucker,Bruno,Mercer, ,McCall,Akinwande,Golota,Tua,Rahman,Briggs,Mavrovic. Who has more impressive list in the history of the heavyweight division?
The bringing up of Moore actually reminds us of someone worthy of some serious exploration in this thread. Someone too often forgotten. Ezzard Charles - From 1946 to latter 1951 he lost one controversial decision (against a heavyweight while Ezzard himself was still fighting below 175) which was convincingly avenged inside of 12 months. He actually beat Walcott twice before Walcott eventually came back and ended Charles ridiculously strong run. Some victims in this all time run just to name a few - Archie Moore x 3 Lloyd Marshall x 2 Jimmy Bivins x 3 Joey Maxim x 2 Joe Walcott x 2 Joe Louis Gus Lesnevich Pat Valentino Insane stuff, particularly below heavyweight or on the fringes of it.
Laciar had a strong run from 80 to 87 against excellent comp other than a close loss to the brilliantly gifted Ibarra and being robbed against Magri. Beat the likes of Zapata, Herrera, Gonzalez, Mathebula, Roman etc while the WBC flyweight title was changing hands every other fight.