I assume you're looking at the Traffic Summary > General page? Sorry I can't check as I've a few problems with my VE at the moment. That would be the wrong stats to look at as they are system wide.
Ideally you'd want to look at a number of statistics and compare them too to ensure everything matches up. So, if you had dedicated physical interfaces for client-side, server-side and server-sideDB you'd clear the counters, test and then look at: Statistics > Module Statistics > Network and get the figures for all the network interfaces (in and out). Then you would take a look at Statistics > Module Statistics > Local Traffic and gather the statistics for the Virtual Servers and Pool Members, in and out and they should look similar.
Of course, if you're tagging VLANs etc. you'll have to just rely on the LTM statistics and in this case, that might be better for you. The F5 is a proxy so you'll have to work each step out;
1) First VS, client-side is the actual PC/test device, server-side is what is returned by the real servers in that VSs Pool, server-side is the F5 VS
2) First VSs Pool, client-side is the F5, server-side is the real server(s)
3) Second VS, client-side is the real servers, server-side is the F5 VS
4) Second VSs Pool, client-side is the F5, server-side is the real server(s)
Just try not to double-count anything! If I were you, I'd draw a diagram to understand all the flows and what stats related to what host etc. Remember, server-side stats for VS1 will match client-side for Pool1 but not server-side as the same servers are talking to the DB/backend servers etc. etc.