There is nothing surprising about Panda and Trend Micro performing well on this test. They are considered among the small group of AV companies that are trustable. Mind you, Trend Micro is the third largest provider of endpoint protections. In corporate environments, they shield against threats that home users will never imagine facing, and they would be ditched if they can't protect the networks. Also, their cloud reputation and behaviour blocker has improved by a lot in the 2015 edition.
As for Panda, they are one of the pioneers of cloud technologies and behaviour blockers. As mentioned by others, real world protection tests consider every aspect of the software and not just signature protection. Eset undoubtedly have some of the best signatures and its malware analysis teams are really fast at adding definitions. However, as always in such tests, there is the "luck" component.