Technically speaking a Dubia comes from a tropical environment while a B.lateralis is a bit more tolerant, and is considered a pest roach in quite a few countries of Europe. Also Dubia mature MUCH slower then Lateralis.... personally I dislike Lateralis due to their speed....
lateralis are ok, I mean they breed like crazy!! I wouldn't use them as an all the time stable mainly because for me it takes for ever to just pick them out and feed them. They are ok if your hand feeding or if your feeding inverts.