If all you look at is Extra Attack. But there is more to the Fighter than that, and it adds up to being martially more proficient than a Paladin, especially in a full Adventure Day. Paladins are amazing if they can Smite nova all the time, but that's a limited resource, unlike Fighter toys.
Sorry, this de-railed my thoughts. Fighter Toys like what?
I literally just did an analysis showing the various martials damage, and this is what is looks like to me.
Fighting Style? Both have them
Weapon Masteries? both will have them (who else in the Priest packet do you think they are giving them to?)
Other than that? You have feats, second wind/lay on hands, and the paladin's massive number of support abilities.
Then you compare their damage
1-4: Baseline, Paladin and Fighter are identical. Fighter's can once per short rest Action Surge, Paladins have spell slots for smite.
5 - 10: Baseline, Paladin and Fighter are identical, Fighter's can once per short rest Action Surge, Paladins have even more spell slots for smite.
11 - 17: Fighter's get a 3rd attack, but Paladin's get Improved Divine Smite for extra damage on every hit. I can't do all the math, but on Sword and Board builds with Flex and Dueling, that is 31.5 for the Fighter and 30 for the Paladin on average. Greatsword with Great Weapon Style and Great Weapon Feat (One DnD versions) are dealing 34 Fighter and 33 Paladin.
And again, this is not damage with the Divine Smites, or with the single Action Surge fighter's get. So... Seriously, how can you possibly claim that Paladins are HALF the warrior that Fighter's are? Same armor, same AC, and they are practically identical in damage output until 18th level... as long as you don't count the Paladin's free Steed.