Greatest light heavys of the 20s compete in the 40s, what would change?

Possibly,
1. Charles
2. Moore
3. Tunney
4. Greb
5. Loughran
6. Bivins
7. Norfolk
8. Gibbons
9. Marshall
10. Maxim

 

That's about right though I would have Gibbons over Norfolk, even Bivins.

 

1. Charles
2. Greb
3. Tunney
4. Moore
5. Bivins
6. Loughran
7. T. Gibbons
8. Marshall
9. Norfolk
10. Rosenbloom

 

Greb over the guy who beat him at least 3 times?

 

Whilst Greb was 1-3-1 vs Tunney, their their 2nd fight was widely considered a robbery and their 5th was contested at HW. At LHW, on fair scorecards, Greb likely deserves to be 2-1-1 vs Tunney. Not to mention Greb was past prime by the end of their series, though Gene likely green at the beginning.

Their fights against each other aside, Greb has a vastly deeper win resume, though Tunney was otherwise unbeaten. I have Greb ahead at LHW by a hair, but have no major argument with someone having them the other way around.

 

You had me at Whilst.

Let's look at Greb's best wins at 175:
Jimmy Delaney (3x?)
Maxie Rosenbloom
Johnny Wilson (over the hill)
Tunney (at least once)
Jimmy Slattery
Tiger Flowers (his win was above 160 technically)
Tommy Loughran (x2)
Tommy Gibbons (x2)
Kid Norfolk (technically at HW by a couple pounds)
Mike McTigue
Battling Levinksy (x3)

Tunney's best at 175:
Greb (x3)
Georges Carpentier
Tommy Loughran
Battling Levinsky
Leo Houck

Dang. I think you've convinced me.

 

Here's one for u.. Greb took on arguably 25-30% of the 20 best LHWs to ever grace the squared circle.. 23% of the top 30 & 20% of the top 50.. even more astonishing his overall numbers might have been even higher had bouts with Young Stribling & Jack Delaney not fallen through.. & Carpentier, Battling Siki and Paul Berlenbach wouldn't sign on the dotted line.. a reasonable tweak of a few decisions and Harry garners a 3-1/2-1-1 tally against Tunney and a 6-0/5-1 mark over Loughran.

Greb is king.

https://thegruelingtruth.com/boxing/ezzard-charles-harry-greb-light-heavyweight-perspective/