Are there different versions of LWO ??

Also, OBJ (+MTL) is un-rigged. Upside, as both are text files, paths etc may be hand-edited.
FBX may be rigged. It may even have 'relative' texture calls, rather than hard-coded into depths of author's G: drive's folder tree...
But, due to differences between 3rd Party / Open Source FBX plug-ins, eg for Blender, and the proprietary Adobe SDK, import results vary.
I half-joke about three types of outcome:
'Okay', either due Adobe SDK --'Rigged by Maya' ?-- or a temporary 'happy alignment' of eg Blender and plug-in sub-versions' quirks.
'So-So', anywhere between a few and many sub-rigs. Position / pose using first, parent others to this ASAP to off-load Poser hierarchy base...
'Splat', think Star-Trek Transporter Accident. Call janitor to mop mess, close and re-start Poser...