@aserothbw He's a weapon damage carry... if he had CC or more defensive stats he would be too strong. Snipers, ADCs, WDCs, or whatever you want to call them are designed to be glass cannons. They deal massive damage but have low CC and defense. If he wasn't a glass cannon, he wouldn't be allowed to deal as much damage, in which case he would just be a brawler with low CC - which would be terrible.
@manaszon Xenos might have a knockup, but no other snipers have actual CC, just slows. Ok, Itarri has a conditional that allows her to root instead of slow, but still, not much CC. Yes Lagatus has arguable the weakest slow since it only works when dashing at the enemy, but he makes up for it. The passive on his E gives him free attack speed, increasing his sustained damage. Sustained damage is what WD carries are all about.
WD carries should be bad at winning 1v1s throughout most of the game. Since they achieve the highest sustained damage out of all classes, they shouln't also be good at bursting, surviving, or CC. They are not meant to duel people, but to shred targets that aren't focused completely on them. With a little peal from your team, and with a few proficiencies, you should be able to melt enemies in the late parts of the game. If that is to be the case, the character can't also be good at CC or burst, or they would just be too strong. If you want more burst, play Mackwell, if you want more CC play Xenos, if you want more attack speed part of the time play Vikka, if you want heavy sustained damage and an escape play Legatus.