Seagate Backup Plus 4GB: USB3 vs Thunderbolt

If you are considering to get a thunderbolt version of the Backup Plus disk or to retrofit the thunderbolt desktop adapter (STAE127) here are some measurements I took:

Via USB 3:

Via Thunderbolt, Seagate STAE127 desktop thunderbolt adapter:

Disk is a Seagate Backup Plus 4GB. Host is a 2012 MBPr with 10.8.2