Actually the opposite. In so far as this specific research the capacity fade rate of the NMC cells were actually the inverse of LFP (LFP started losing capacity more dramatically than NMC which almost started doing better). “In the 15°C to 35°C temperature range, the capacity fade rate increased with increasing temperature for LFP cells but decreased for NMC cells”.
NMC should probably do better in higher temps than LFP but that is if only looking at temperature removed from DOD etc.
If looking at temperature as variable the following paper also is quite telling. The authors compared Lead Acid and LFP batteries in a modelling study but importantly included both cycling and calender ageing for the LFP batteries:
Comparing fairly oversized battery banks (off-grid type system with >2 days autonomy) with associated very low C rate discharge/charge in two locations where one has an average temperature of about 5°C and another with an average temperature of about 25°C. Their results suggest that for lead acid in the 5°C climate the lead acids could have a 12 year life but only 5 years in the 25°C climate. For LFP in the 5°C climate the life was calculated to 20 years, but reduced to 13.7 years for the 25°C climate.
If a NMC bank which is equally oversized and used in a climate >25°C I suspect the NMC could last a bit longer than the LFP.
But with initial out of pocket cost I think many people in South Africa will end up with battery banks that cycle closer to the 20-100% DOD type range, where LFP might then be better in terms of getting the most energy for the Rands spent over the life of the batteries.