What are the key differentiators of MIPI A-PHY?

The primary benefits of A-PHY are: 

• A-PHY supports long cable lengths and a high data rate.
• A-PHY has enhanced noise immunity.
• A-PHY has an ultra-low packet error rate < 10^-19.
• A-PHY has higher than a 90% net data rate.
• A-PHY can be fully implemented in hardware -- no software stack is required as in some solutions.
• Designed for use with widely implemented protocols and interfaces.
• A-PHY is the first asymmetric industry-standard solution. Most other solutions are proprietary.