They have either the weakest or 2nd weakest destro depending on circumstance because it has zero offensive player agency for micro while the defensive player can regularly dodge two thirds the dps. Only reason valiant is potentially worse is because it can’t cross utility to deal with subs. Salem actively gets worse when you try to micro it because the guns do not shoot backwards.
Corsairs are really not great at dealing with anything that isn’t acus and even then it can be dodged. They’re not bad, no t2 air option is, but it’s probably the worst overall at least at high level games where options matter for causing defenses to spread. Also aeon gunship is still better for snipes tbh.
Your take on t3 land makes me question everything. You don’t understand the value of harbs, sera mobile shields, or snipers. Cybran was basically just a worse UEF who still has a tough time at t3 stage. The slowness of siege bots + the infrastructure to setup the production + no shields to keep them safe from aoe makes t3 constantly problematic for cybran.
“easily 2nd place” it’s kinda agreed by everybody to be the worst, that’s why last patch it got more buffs.
Cyb also has no ravager to stop snipers like UEF, they strictly need to go for 15k mass arty base or 35k mass mega.