yes mr 2 is the one opponent of sanji's who was relevant after their fight
In fact Mr2 alone stomps in plot relevance everyone zoro fought. Saving Luffy and co right in time for them to go to war, and moving the plot.
Zoro may have stronger opponets than Sanji with 1% or like 20 doriki better, but in plot relevance Sanji stomps, just how Queen stomps so far Kings race.