Denis Cyplenkov vs Richard Lupkes Who is the Stronger in their Primes ?

This video is a comparison of Denis Cyplenkov vs Richard Lupkes. Who do you think is/was the stronger one in their respective primes.

"Leviathan" Richard Lupkes born October 5th 1956 is a multiple time armwrestling world champion and former professional wrestler. He is currently a contender in the UAL's superheavyweight division (right-hand).

Denis Cyplenkov (Tsyplenkov) is known not only as a world record holder in strict curl, but also as a man with oversized hands. Denis Cyplenkov is the name of the man who has held the world record in strict curl since 2015.

Following Matches are featured in this video:
Denis Cyplenkov vs Andrey Pushkar
Denis Cyplenkov vs Arsen LILIEV
Denis Cyplenkov vs MICHAEL TODD
Denis Cyplenkov vs Devon Larrat
Denis Cyplenkov vs Oleg Zhokh
Denis Cyplenkov vs Dave Chaffee
Denis Cyplenkov vs John Brzenk
Denis Cyplenkov vs Richard Lupkes
Richard Lupkes vs Gary Goodridge
Richard Lupkes vs Ryan Espey
Richard Lupkes vs Tim Bresnan
Richard Lupkes vs Ryan Espey
Richard Lupkes vs Rorbakken
Richard Lupkes vs Travis Bagent
Richard Lupkes vs Humberto Panzetti
Richard Lupkes vs John Brzenk