Monitoring REST server traffic

We are doing load testing for a new website programmed entirely in REST when possible (otherwise SOAP is used).   Typically / in the past we would zero in on ASP.NET performance counters like Requests Executing & Requests Queued.  They work great in gauging concurrent requests executing vs any sort of queuing that may be going on.  

Anyway, during the load testing, ASP.NET data I'm logging seems significantly lower than expected. I'm trying to determine why.   It occurred to me that I first need to know if the ASP.NET counters are even suitable for logging REST traffic...

Does anyone know if this is the case?  If not, are there other counters that I can use to monitor REST traffic?



[edited by: Jason Kaiser at 5:02 PM (GMT -6) on 1 Dec 2015]