Is the same as you is a Karatê Black Belt, yet defeated a guy with a same belt and strenght as you, yet your are more skilled, so you are more stronger?
"Strength" in real life is different from "strength" in manga/anime.
When you say someone is "strong" in real life, it's usually in reference to physical strength/power....force.
In manga/anime, we have this ambiguous phrase of "power level" which at the end of the day is just a fancy way to say "combat ability."
So yes I would say that the overall more "skilled" fighter is "stronger" in the sense of combat ability.
Swordsmanship is a skill. Haki is a skill. Endurance, speed & physical strength are skills.