I can only speak for myself. I know what the FAA defines as PIC under 61. I however became a pilot as a carrier, that being said I began logging time under the most conservative interpritation of all of the definitions having been described to me as what a PIC is (when I am assigned by a company to act as PIC of an aircraft) I realize that this is just my standard for myself, but every interview I have every done was made very easy by only logging PIC in this manor. When the question gets asked about PIC time I could answer with confidence that I was asssigned the PIC by a company I was flying for. (it also makes filling out applications real easy as well) I let the lawyers figure out all the legal jargin, I just fly airplanes.