EX SSL-VPN: What are the advantages of enabling ESP in Tunnel mode?

Question:

What are the advantages/features on enabling ESP in Tunnel mode?

Features and Functionality for ESP Based Tunnel:

ESP (Encapsulating Security Payload) is a way to encapsulate and decapsulate packets inside of a UDP wrapper (port 4500) for traversing NATs.
Using it can improve the performance of UDP-streaming applications like VoIP. For more information on ESP, see RFCs 2406 and 3948 .

• ESP encapsulation is the default setting for newly defined communities.
• UDP port 4500 must be open in network firewalls for traffic to and from the appliance.
• ESP uses AES128/MD5 and for FIPS enabled devices encryption used is AES256/SHA256.
• LZ4 compression is used for ESP/SSL based tunnel.
• If ESP fails or if the client does not support it, then the SSL tunnel is automatically used instead.
• log messages will indicate UDP port 4500 packets for ESP traffic and TCP port 443 packets for SSL tunnel packets .
• ESP is per community based and could be enabled for all network traffic or for UDP traffic only.