Dan - RTFQ!! The discussion here is about incipient stalling. Not many SEP aircraft will exhibit buffet as the first warning...
Incidentally, I used to refuse point blank to use the stupid CFS 'signs' and 'symptoms' of a stall, having had to instruct medical students. Instead I use:
Stall warning: "Keep doing what you're doing and I'm probably going to stall!"
Stall ident: "I just have bŁoody stalled, idiot!"
Mind you, ba$tard UK Wx and the day job means I haven't been able to do any instructing for yonks!