It's also a mistake to assume that a very capable country can't get into a network that uses US equipment/software... especially Cisco equipment with all the "forgotten" hardcoded logins. Iran is better off with Chinese equipment than American or Korean.
Nobody knows enough to say whether Iran is better off with Chinese equipment, because most of the intentional backdoors on every side of this struggle remain undiscovered by the other sides.
Who made that assumption? The comment I replied to said that the network deployed by S. Korean firms was compromised and implied that the one from China was safe. I'm just pointing out that using Huawei or ZTE won't stop a country like Israel.