What heavyweights of the past 50 years could Jack Dempsey NOT beat?

[ray corso]

.........bigger, faster, stronger BUT..............................Dumber! I don't see "modern times" in boxing meaning anything in quality and talents and techniques!
Jack Johnson was ahead of his times then. Joe Louis was a combination puncher with power in both hands! Willie Pep and Benny Leonard wewre "Master Boxer" and theres no one today who can match their artistry! Sugar Ray Robinson is still the best boxer/puncher ever and he retired in 65'!
I know the younger generation compares the Klitz Bros to the greats and actually considers them great fighters but I don't!! Their one dimentional and work in the weakest heavy era of all time! Its NOT their fault but that doesn't make them great, it makes them dominate in a weak era.
I look at the skill base! How the jab is delivered, when its delivederd and how! Is the technique solid or is a give away punch that a quality fighter could detect and capitilize on. The same goes for ALL of the fighters arsonal!!! Evaluating tecyhniques then comparing them is how you can get a truer idea as to how the past meets the now!!! Not looking at records or common opponents. Thats for the amatuers to contend with! Floyd Mayweather is a technically sound fighter and is capable of adapting to any situation but I'd bet anything that Sugar Ray Robinson would "destroy" him inside of 8 rounds!!! Henry Armstrong would wear sneakers just to catch him!! No offense to Floyd but he is NOT an ATG at welter, he's way to small and has no power compared to the great welters. At best he's be a lightweigh or a + pounds at 135 (modern day junior weight class crap) 140lbs.
If someone can demonstrate a new technique in training I'd love to see it! Or something that a fighter is doing thats never been done! When the greatest fighters, trainers and cornermen are from the past how is the so called new techniques and modern mehtods learned and what are these "methods"? Ray.