I can't effectively play more than 3-4 tables.
That being said, I have a higher sustained BB/100 than any "TAgg" player I know of.

However, I have proven to myself that effective tight play decreases my BB/100 only slightly, and would allow me to play up to 8 tables effectively.

Therefore, I believe TAgg play is more profitable in the sense that you can play more hands on more tables in the same amount of time.