IT is not as simple as you think
go through this link , it explains how limits are calculated in vmware.
and after reading this, you can appreciate that Limit is calculated dynamically by vSphere for each operation and it not only dependent on the type of operation for example vmotion, storage vmotion , cloning etc. but also on type of resources involved
For example the vmotion withour shared datastore = vMorion +Storage vmotion ..
and varying cost will have ripple effect on all the operations.