Because I don't think it's relevant or really compares at all. It's what happens on the Sunny that matters, not in a Marine battleship.
Lmao, who is deciding these arbitrary rules? Most of the straw hats joined the crew before they even stepped foot on the ship. So where does this "It's what happens on the Sunny" rule magically appear from where we discard previous showings.
We knew that Jinbei could helm though it hadn't been focused on
We know that Carrot can look through binoculars but it hasn't been focused on
When Jinbei gets his first go at helming the Sunny, it made into a massive deal by Oda, to show off that Jinbei isn't just a helmsman, he's a genius at it
On the other hand, when Carrot gets her first go at being lookout in the Sunny, it isn't a big deal. And then other characters, on the same ship that she's on, do the exact same thing.
Jinbe demonstrated his helming in front of Luffy, and there was zero reaction. Jinbe was presenting his skills right before Luffy when they were needed the most, rushing to Ace's aid. Yet...absolutely nothing.
Jinbe's helming skills are shown off in a situation specifically created to do that. Carrot is now heading into a circumstance that could very easily become an opportunity for her to show what she can do too. Let's not forget about the minks were able to totally hide their presence from even Luffy. Carrot has great potential for some stealth, scout, look out showings in the coming chapters.
Evidence with Jinbe, Oda's not always consistent when it comes to these showings and if he wants to suddenly reveal a talent of hers, he can.
She isn't though, is she? She was doing it on the WCI trip- although so we're other characters- then the second the crew has gathered together we don't get any of it. Hell, she didn't even do it on the approach to Wano, which ended in the ship being sucked into a whirlpool.
Anyone can open their eyes. There's only one helm. But even so, Carrot was the one up in the crows nest, the actual lookout position on the ship.
What happened before Jinbei got on the ship is irrelevant, much in the same way what happened prior to Carrot getting in the ship is irrelevant. What matters is how Oda displays the characters when they get on the Sunny
-we see Jinbei get a great helming feat, characters comment on how he's great at it, the ship actually sinks in the approach to Wano without him, he reappears and Nami tells Franky he's a brilliant helmsman
-Carrot is a lookout, no one comments on it, other characters do it while she's actually on the ship.
Again with these made up rules to suit your argument. Why on earth should we discard what characters show when they're off the ship? As I said before, most of the straw hats were already straw hats by the time they first stepped onto the ship.
There's a difference between sharing focus and not having any at all. Jinbei, Law, Shirahoshi, Kine'mon, Momo, Pudding, Rebecca et al had to share multichapter flashbacks and arcs, but they still stood at the forefront of them. Carrot hasn't. She didn't even get to stand out in Zou, in her home island. Her relationship with Pedro got summed up in a measly three panels. Why should I expect her to have a significant story arc now? The Dawn? Pedro told us that's relates to the Kozuki's and the Minks, she'll see what it means, but she's not likely to overshadow Momo or Kin. A fight with Perospero? Maybe, but Perospero isn't exactly one of the outstanding villains of the arc, and we've already seen her Su Long.
The difference being that Carrot has been with the main cast for nearly 200 chapters. For a totally unexplained reason. Oda's been developing her relationships with the members of the crew, and her actual story arc is literally tied to gaining a greater understanding of the straw hat crew as a whole and what it will do.
You mention Carrot might fight Perospero, (which I agree with btw), which is funny because you call Perospero not exactly an outstanding villain of the arc, but he's one of the strongest mid tiers there are on the enemy side.
The flying 6 introduced this chapter seem like potential enemies for the straw hats outside of the M3, and with Carrot fighting an enemy from the BMP on par with them, that's awfully funny, right? Fighting a significant opponent and potentially the 3rd strongest BMP present on the island, excluding the meme herself.
Damn right, Paul- I mean Carrot, will clearly be a Strawhat.
Paulie was a genuine red-herring. Oda already told us someone would be joining so he baited readers with Paulie to hide Franky. There is literally no other realistic candidate other than Carrot so you know this wouldn't be bait, but the real deal.