Why Does Stalling Occur Mainly in Plug-in Hybrids (DMi, EMi) but Not Conventional Hybrids (THS, i-MMD)?

为什么失速基本都存在于插电混动车型 (如 DMi 、 EMi)，而不存在于油电混动车型 (如 THS 、 iMMD)？

A public trend signal observed across 1 source.