I'm dissapointed, I thought people on AM were better informed than this. Phera-plex and Ergomax are isomers of the same compound, hence they can both be written the same way so it's not fraudulent advertising (although the name is misleading - you're noticing the PHERA-max when you should be noticing phera-MAX).
Phera-plex is pure 5a 2-ene isomer, whilst Ergomax is a mix of the 5a/5b 2-ene and 5a/5b 3-ene isomers. SNS Methyl-plex was close to phera-plex being 80% 5a 2-ene and 20% 5b 2-ene, whilst Pherabol was an exact Phera-plex clone at 100% 5a 2-ene. Phera-max is Ergomax (contains all isomers), consult this thread for further information
http://anabolicminds.com/forum/generic-labz/43678-cross-reference-pheramax.html#post507929