Hi Belva,
The term adrequest in our current admin is a bit misleading (it was originally internal number, but we've kept it in the admin).
Your game will actually make an adrequest everytime it is started (regardless whether the user ever sees an ad). So that number does NOT correspond to the number of times you have tried to show an ad.
The number you should use when comparing is the 2621 started / shown ads.