The requirement is to run the loadtest for 100 VUs. Now this run can be made with different values of max. think time. If we keep it 30 sec. then load of server is less and if we set it to 20 sec. or 10 sec. the load on server increases. Now in all cases, although suite was run for 100 VUs but due to different values of max. think time value, response time was different. For setting with 10 sec., it was maximum.