Hello,
Yes. they offer more capabilities related to bandwith,etc.
Now if what you are looking for is granular application knowledge and funcionality then you should point to the new family of ASA Context Aware (CX). Those will provide you a really really really deep application control.
Any other question..Sure.. Just remember to rate all of my posts
Julio
Julio Carvajal
Senior Network Security and Core Specialist
CCIE #42930, 2xCCNP, JNCIP-SEC