Non-uniform high strain rate deformations are usually performed at the temperatures above recrystallization. The dynamic or the meta-dynamic recrystallization affects the grain growth and ultimately the strain states during the deformation. Constantly improving plasticity models used in numerical analyses do not often capture this vital information. A non-uniform hot shape rolled product was simulated through finite element (FE) method using existing plasticity constitutive models which included Johnson-Cook and the Arrhenius equations. Such models, generated through extensive experimental data sets, often do not directly consider the microstructural effects during deformation. Hence, cellular automata (CA) based dynamic recrystallization (DRX) was constituted, and coupled with the FE model of deformation. The CA-FE results were analysed against the macroscale plasticity models and the differences were explored within various plasticity models with CA-FE model also acting as one of them. Variations in the CA formulations as per the degrees of approximations and the corresponding computation time scales were also investigated and compared for the accuracy of the results at the end.