Batwing = Break
Yes it is the coolest looking headstock- but because it's so long and because it's pitched back- it's a real weak spot on the guitar. I can imagine Epiphone wanting to do the 3x3 headstock just to cut down the number of breaks- regardless of how cool the batwing is.
I've got a 65 Olympic- snapped the headstock, had it repaired- the repair guy built a volute on the back- it's not exactly pretty or all that comfortable, but it's stable.
The other issue with the batwing is that it's a long way from the nut to the farthest tuners- with no string tree or anything to keep the strings from vibrating- so you'll get a lot of sympathetic vibrations- I just use a velcro cable tie to damp it.