Hi @Neeraj_Khatri,
it is hard to tell what might be the reason for the different results from just looking at the print outs. Could you provide a small example with e.g. one column where the comparision fails?
Maybe you find this post helpful: Results differ from Karamba and FEM-design - Grasshopper / Karamba3D - McNeel Forum. In one of my responses you will find the C++ sourcecode attached which is used to calculate the utilization based on EC3. It is not very complicated to read and contains references to the design formulas in EC3.
The ‘SwayFrame’ option can have a large impact on the results.
– Clemens