Difference of Acan and Acand lords

[MrDeathKills]

Im trying to understand what is the real difference in a normal Acan and an Acan Lord? I see on sites that acan lords are very expensive but normal acans are much cheaper. Trying to understand why that is and what the actual difference in them is.

 

[kilnakorr]

Acan /Acanthastrea has varies sub families, like lordhowensis, and echinata.
I'm no expert but I believe Acan lord, has been reclassified and is noe Micromussa Lordhowensis. Acan lord / Acanthastrea Lordhowensis does not exit.
I actually came here to open a thread to get some id on a coral that I don't think is a Lordhowensis