It could mean that its base stock is 100% Group III. It doesn't say that it is PAO or ESTER. Their quote:
"Havoline ProDSŪ Full Synthetic Motor Oils with Deposit Shield Technology are formulated using 100% synthetic base stocks for top performance."
'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'06 Mazda 3i 2.0L
'15 Nissan Altima 2.5 SV