Nope

Garp >= Sengoku at best
If Garp was clearly stronger , shiki wouldn't call both + whole Navy as weaklings
Roger would have said "bring sengoku or Even the greatest, Garp "
Garp and Sengoku share all feats and portrayal bar the Rocks battle and because Garp is a D and related to Luffy so Garp above Sengoku is fair.
 
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