EAM contains one of the best Behaviour Blockers (don't I miss Mamutu). Works just fine without a connection granted you have the data base updated and removal capabilities are far superior compared to Crystal.
Also, you cannot really compare EAM with Crystal. If you going to compare EAM, compare it to another non-cloud only solution.
Furthermore, EAM is way longer in the market, therefore more mature.
If you were to compare EAM with Symantec/Kaspersky/ESET etc and Crystal with WSA and Panda Cloud then yes you would have more constructive opinions.