Query about Second Order Transfer Function

HI

I am using Altair Embed Tool.

In this study, I want to use the 2nd order transfer function in my application.
Embed has a provision to import direct Matlab simulation .mdl models and it will convert Simulink blocks to embed blocks. First I created a simple 2nd order transfer function with step input in Matlab/Simulink and imported it to embed. captured both Simulink and embed results, if I plot both, the Results are not matching, there is a small difference.
can you please help me where is the problem and how to fix it?

I am sharing related diagrams, test output results, and Screenshots.

Regards,

R Sanjeev