VSS with SUP 2T

Question

Dears
I have 2 no's 6509 chassis in VSS with sup2t and ASA-SM installed, as I know that the dataplane is active for both switches so the cisco says that I we will get the throughput of 4.0 tbps but the ASA-SM only supports 20 gbps, and all vlan interface are created on ASA-SM module so there all bottleneck happens, Customer is not ready to move any vlan interface to the 6509 MSFC by bypassing ASA-SM.
so how the ROI should be explained to the customer of SUP2T with ASA-SM if installed.
thanks

Answer 1

Dear Jon,
1) It's an ASA service module inside the 6500 chassis and not the ASA standalone appliance. All Network in the world will reach to a place where they have to push the traffic to firewall where definitely the speed will reduce from tbps to gbps and not every organization can place high end firewall with 10 GIG ports with better throughput, so from your reply what I understand is that VSS benefits only with an intervlan routing. 
Bear in mind that if most of the traffic is routed to remote networks then your uplinks also become bottlenecks although you could probably get more uplink capacity than your ASA gives you.
how to get more uplink capacity ??
Of course there are obviously other benefits with VSS in terms of ease of configuration, redudancy etc. and it really comes down to your priorities.
can you list more.
2) I have read the SUP2t Datasheet saying per slot 80gbps I hope it is half duplex becz if I put 16 port 10 gig module the bandwidth will reach till 160 Gbps , please correct ???
3) I have attached 4 port 40 Gbps module datasheet, so what it says that with all ports sending traffic will reach to 160gbps per slot if a chassis populated with 40 gig module and all set to send traffic with full bandwidth than it only reaches to 1.7 tbps which is less than 2tbps.
4) I have another doubt that 6500 chassis backplane support only 40 gig so incase if the module is sending traffic with 160 gbps than how it handles.
Thanks