Why Chu Ko Nus are considered OP?

• Attack, when we also consider accuracy: Toxotes - 6,5*0,8=5,2 Chu Ko Nu - 4*2*0,7=5,6 ---> Chu Ko Nu's attack is 7,5% higher.
• Cost: Toxotes - 55W+35G=90 Chu Ko Nu - 60W+40G=100 ---> Chu Ko Nu's cost is 11% higher.
• HP from Medium, Heavy and Champion upgrades: Toxotes +6+6+6=18 Chu Ko Nu +6+9+12=27 ---> Only fully upgraded Chu Ko Nu has 11,5% higher HP
• Minor god specific attack boost: Toxotes +0,65+0,65+0,975=2,275 Chu Ko Nu +0,8=0,8 ---> Greeks have much more tech to boost the attack of Toxotes.
• Chienese are lack of any anti archer units, their only chance in the early game to counter archers with archers. You can see here the suffering of rebalanced chienese: https://www.twitch.tv/videos/243238668

Conclusion: Cho Ko Nus aren't OP.