Very often the count of transactions at the load balancer and servers will not be exactly the same. Usually the Load Balancer will have fewer transactions/operations and fewer bytes transferred at the software service level. Most load balancers have a "check" they perform against the servers. This check verifies the server is available for use and can receive requests.
The magnitude of difference depends on how often the checks are performed. They may show up as "healtcheck" urls or might not - again depending on how the check is configured.
Rather than just looking at the operations/transaction total for the software service - it may be more accurate to look at the operation or specific URL counts. Open the software services and display the individual operations. Comparing the named operation counts should be close, if not exactly the same.
If the individual operation counts are different there may be an issue with network packet collection. The data feeds may need to be reviewed.