So, after working on this for some time and reading a lot, i realized that this example is more of a practical analysis for day today js code writing that we do. so the result is more kind of related to it and what should be the choice from those 3.
However, you are right about the performance benchmarking factor. Good news, I have done analysis on the inline cache, warm cache and working on how to get GC in place and hidden classes to get better results.
I am still analyzing the results, also as mentioned in the above comments, i need to consider more things before making a conclusion, i am working on it and will update soon.