Hello John,
from the HP LoadRunner Analysis User Guide (in attached) i found these definitions:
Hits per Second - Pag: 252 - Chapter 14 • Web Resources Graphs
This Graph shows the number of HTTP requests made by Vusers to the Web server during each second of the load test scenario run.
Throughput Graph - Pag: 261 - Chapter 14 • Web Resources Graphs
This graph shows the amount of throughput on the server during each second of the load test scenario run. Throughput is measured in bytes or megabytes and represents the amount of data that the Vusers received from
the server at any given second.
Bye bye
Gianfranco