This seems like silly politics to me - if the rendering engine and internals are from mainline Firefox, just identify as that, regardless of using an old UI...
Adblock Latitude is designed to be a drop in replacement for ABP and will utilize all your exsisting settings. However, ABL is more than that. It intends to also replace Adblock Edge by removing the hard coded Acceptable Ads feature."Huh, isn't the removal of Acceptable Ads one of the things that Adblock Edge is all about, and why it was forked from Adblock Plus?
Hence some of my notes!
1. The engines are "sorta" from Firefox - they're supposed to be stripped slightly to run a hair faster on Windows, though I never really traced any of that. I just kept seeing less Mozilla experimentation, and stayed here. See App's note from the fall about how slight differences (identifiers, and whatever else) began to affect actual usage.
2. Again, I just got lost with all of the "Sporking" of AdBlock ____, so I just posted my note again and responded as much to the above as anything, and news reporters are like magpies - they only post parts 1,3 and 7 of an 8 part story, so when I saw the owner switch-back, as I noted above, I was just as confused as you were, installed them both and decided to toggle them on and off as I desired, and left it at that. There's no reason you can't have both copies of the add-on "in the wings".
Plus, I swear just now I saw diffs in trying to adblock avatar images from here, starting with app's cat. Adblock Plus was not taking it at first, Adblock Latitude just did, and now it's hidden from both.