Garen also has an ability that gives him 30 armor and MR passively, which he can activate for 80% Tenacity and damage reduction, dropping to 30% damage reduction after .75 seconds. He tends to build a lot of armor as well.
Ashe, on the other hand, is arguably the least mobile champion in League, and has jack shit for armor itemization. The only armor item remotely viable for her is
, which is the item with arguably the worst stats in the game, only made useful by its passive, and which has a shit build path, so you can't even just sit on the armor for a while. She pays 2400 gold and a slot for stats Garen gets in his kit.
And, let's be serious: base stats are highly deceptive. Ahri has higher base AD, AD growth, base AS, and AS growth than Jinx does. Ahri's base stats mean that she should be a better ADC than Jinx, an actual ADC. Yet Ahri is not considered a meta ADC.