Clone, what does it do technically in an iRule?

I zero out the counters and then I run the rule above with a single request, these are the counters after. I see the request in the IIS log of app_pool but I I see no request in the IIS logs of the warning pool. I understand that the F5 is ignoring the response from the cloned traffic but why are the other numbers so different and why is there no request?

Bits Packets Connections Requests

Pool In Out In Out Current Maximum Total Total

app_pool 8.7K 247.8K 15 24 0 1 1 1

Bits Packets Connections Requests

Pool In Out In Out Current Maximum Total Total

wrn_pool 265.8K 0 47 0 0 2 2 0