Roger - Luffy - Different fighting styles - Both have acoc
Ray - Zoro - Different sword styles - Both have acoc
Gaban - Sanji - Different fighting styles - But one won't have acoc
That's a very funny way of oversimplifying things to fit your biased criteria.
Let's take Zoro for instance. Their parallels are:
1. First mate of the crew
2. second in command
3. right hand of the Captain
4. both were specifically sought out by the captain
5. scar in the eye
6. scar in the torso
7. Like drinking
8. both are swordsmen with Zoro even using 1SS every once in a while like Ray
9. their titles are extremely similar to each other in Japanese
That's 9 parallels that I found in like... 15 seconds?
Now for Sanji's with Gabum's:
1. Power of love
2. liking women ig?
3. Being the 3rd strongest (which fails if we take into consideration Oden).
There is no 3rd crewmate parallel because that's Nami, he isn't the 3rd most important person/main character from the Crew because that would be Nami again, there is no similar role because those would be Jimbei/Nami, their fighting styles are extremely different (axes vs kicking), there are no design parallels (like the scars), Sanji bases his main powers in Science which is a HUGE difference...
2, 3 perhaps 3 S4nji/Gabum parallels vs over 9 from Zoro/Ray. The difference, my friend, is night and day. You can't use the logic "Y will get something because X" has it when the characters are so fucking different from each other.