In theory, maybe, but I've accounted for that. I'm relatively new as a poster on this particular forum but have been around the hobby a long time, off an on since the 1960s and non-stop since the late 80s, so way before fish forums and well before the internet as a social phenomenon-- so I understand the difference.Correct. This was the hobby standard before forums.
Given it was the hobby standard for so long, all my books and magazine articles use SL. Lots of old timers on here use it still too. So yes, it can account for some of the discrepancy.
In any case, I know the differences in size of my own fish I've kept no matter which way you'd prefer to measure them and my interest here is in parsing out the relative size of the fish in question, or whether there actually is a consistent size difference between these species-- or whether it simply come down to individual variance within the species-- like it does with a number of other cichlids I've kept. I realize you're just trying to clarify something not everyone may account for, so no problem with that as far as it goes, but it's simply not the question I'm interested in. On the other hand, if you have something substantial on a consistent size difference between these species I'm interested.