After the first sentence, I think every word you uttered is utter bull****. Lewis would clearly destroy those two. Butterbean and Meehan would not be the goat under any round limit.
Then you don't know boxing history too well now do you. They were champs for a reason. Fighters trained down in weight for a reason. They didn't throw a high amount of punches each round for a reason. So you think 240lb Lewis would last 45 rds with 4 oz gloves? Ok buddy. Lewis would be a sitting duck against Fitzsimmons. With 4 oz gloves his defense is out the window. Fighting outside in 90 degree heat yeah he's a goner. Why do you think super heavies were rare before 15 rdrs became against the rules?
He would beat corbett but not Fitzsimmons in the 1890s. Bring Fitzsimmons to the 1990s and he doesn't do very well either.
I don't normally post in such a condescending manner but I'd be willing to bet I have a much deeper understanding of boxing history than you. I honestly don't even think it's contestable. No one, with any real appreciation of our sport, would expect Bob Fitzsimmons to beat on Lewis as if he was a sitting duck. The two are literally mutually exclusive. If I was to draw up a Venn Diagram of everyone who understands boxing history and everyone who thinks Lewis would be a sitting duck against Fitzsimmons, there would be no overlap. None.
Truth! Most promotional companies will tell you that a technical coach can go pound Sam and styles smyles. However if you have something that can improve the durability of their fighter that opens the door.
So if Lewis was the same size as Dempsey - five inches shorter and fifty-five pounds lighter - this wouldn't make things any easier for Dempsey?
He might be even more dangerous. 6ft 190 lb Lewis with a 84" reach would be a nightmare I'm sure. Dempsey might not even land. I don't know why you insist on these irrational match ups tho. Why don't we cut of Dempsey's leg while we're at it? How would Ali have fared against Liston if we shoved his own foot up his ass and blind folded him?
You think that Lewis would fight exactly the same in the 1890s as he did in the 1990s that sums up about all the boxing you know.
You could neutralise that by giving a comparative boost to Carpentier's height and weight as a percantage. Does that then benefit either man in any way when you oppose it to their original height and weight?
So would you go so far as to say that Lewis's size holds absolutely no advantage for him? He'd be as good without that size as with it? Or in fact, better if he was smaller? Well, strangely enough, i think analysing the impact of size on match ups is probably key in understanding the impact of of size on match ups. To what end? He'd have lost.
Against Dempsey perhaps. Look at Sam Langford, he had a long reach but was only 5'7". Extremely short for a heavyweight who are upwards of 6'-6'2" in his time. Arm Length is more important that overall reach and better yet height. If we put Lewis in against a less physical upinyourface fighter like Dempsey, say Tunney then 245lb 6'5" Lewis would win.