I think that Seat62K says it right. I can't see why people think this, other than in VERY specific cases. It also depends on what you/they call 'lh'? Across the pond is long but it's not the 10/11/12 hours of UK to LAX/JNB/CPT/BKK/SIN.
The very long haul are wide bodies and so we are back to the usual problem of reviews on the web being indistinct and scatter-gun. I avoid reviews by people I do not know and that imprecise.
Yes, it WAS (or is) 5-across in DC-10Y and I still have reservations about ETOPS!!