Well, powerlevel wise, Carrot has been fighting a 700million bounty guy with Wanda... While we still don't know yet how high are the TR bounties, but 700mb isn't that low...
And almost defeated Perospero with the Sulong...
And they both lose together in Sulong... When did Carrot almost defeated Peros?
By that, once a month, Carrot can be on the level less than half of that of a vet (maybe a basic headliner)... The rest of the month (or 353/365 days a year) she's useless against vets... Perhaps she's around Babanuki powerwise (he only looked weak because it was Luffy who beat him, but the guy might be capable of using Haki)...
Makes sense for Yamato vs. Carrot to be compared to Jinbe vs. Shirahoshi comparison in a sense that Shirahoshi can only be powerful if she summons the sea kings...
Franky vs. Paulie, those 2 are not that far powerwise, just like Carrot vs. Caribou...