Actually, there are couple of similar discussion, so, it might be worth taking a look:
http://communities.vmware.com/message/2194693
http://community.spiceworks.com/topic/325332-veeam-replication-vs-vmware-vsphere-replication
http://forums.veeam.com/viewtopic.php?f=24&t=13467
Hope this helps.
Thanks.