I expect that they both can take summer temperatures in
containers just fine. Actinovate has some issues with cold
soils (needs 47F minimum to be effective). Mycorrhizae,
however, survive winters well below freezing on the roots
of cold hardy winter cover crops.
Here is an abstract of a research report on the effect of
soil solarization on mycorrhizae:
http://www.springerlink.com/content/gm2fb9r6nw71h2fk/
(Conclusion: the mycorrhizae survived the raised temperatures
without population loss, but overall populations in soils were
reduced several months later by the reduced weed populations
that resulted from solarization, ie mycorrhizae need roots in the
soil.)