In this study, we have quantitatively analyzed the scattering effects by numerical modeling as well as fabrication and characterization of MIM metasurfaces. We observed the considerable effect backwards scattering has on the optical response of metasurfaces, hence it is a prominent feature that cannot be ignored in their design. Also, there is further room for improvement in removing the specular reflection of metasurfaces, guided by detailed FDTD analysis. Light scattering under slanted incidence is the next required step for analysis of MIM response and can be achieved at a quantitative level using FDTD modeling. We show that it is possible to increase the absorption cross section via use of nano-thin layers of metals with strong absorbance such as Cr. This point was confirmed experimentally by showing that a higher Cr adhesion layer thickness was able to drastically improve thermal radiation output efficiency from MIM metasurfaces. Thermal radiation due to a large enhancement of infrared absorption together with a strong coupling disk and base-plate in MIM metasurfaces provides a promising approach to realize a perfect absorber at the IR molecular fingerprinting spectral range with wide applicability in diverse sensing contexts.