What Makes Sangfor IAG difference from other other competitor?

I want to know some unique features of Sangfor IAG which doesn't provided by other security vendor's product. Why telco companies still need IAG?

Sangfor IAM is a superior Internet behaviour management solution consisting of professional internet bandwidth management, application control, URL filters, traffic control, information control, illegal hotspot/proxy control, behaviour analysis, wireless network management and many more features.

IAM is like a router will full of features that you can't see in other Router vendors.

It has the following advantages: Proxy Avoidance Protection, Intelligent Traffic Management, Gateway and Client Decryption to Uncover Encrypted Traffic, Unified Network-wide Management of all Clients, Precise and Accurate Application Control, Offloading Performance When Using ICAP Integration With Third Party System and Secure Onboarding Devices With Endpoint Security Posture

The main unique features of Sangfor is the kind of license they use which is "Throughput" based not unlike the other brand which is license per user.

Sangfor IAG have the Advance Intelligent Traffic Management, precisely manages both up-link and down-link P2P traffic and can customize traffic "packages" for different users, allocating specific traffic quotas and limiting bandwidth for heavier users.

I think so far many useful feature of IAG have been discussed, but the main difference which i found is user base authentication provided by IAG, but ARUBA clear pass provide MAC base authentication and all the switches have to configure with ARUBA NAC.  I believe this is strong feature to control the users on Non-manageable switches.     

It provides the following benefits: Proxy Avoidance Protection, Intelligent Traffic Management, Gateway and Client Decryption to Uncover Encrypted Traffic, Unified Network-wide Management of All Clients, Precise and Accurate Application Control, Offloading Performance When Using ICAP Integration With Third Party System, and Secure Onboarding Devices With Endpoint Security Posture.

I believe many helpful features of IAG have been addressed thus far, but the primary difference that I discovered is that IAG provides user basis authentication, but ARUBA clear pass provides MAC base authentication and all switches must be configured with ARUBA NAC. This, I feel, is a powerful capability for controlling users on non-manageable switches.

Sangfor IAM is a world-class Internet behavior management system that includes professional internet bandwidth management, application control, URL filters, traffic control, information control, unlawful hotspot/proxy control, behavior analysis, wireless network management, and many other features.

It offers the following advantages: Proxy Avoidance Protection, Intelligent Traffic Management, Gateway and Client Decryption to Uncover Encrypted Traffic, and so on.