BPC 10.1 Unified Environment

Hello Experts,

My client has some questions around unified environment.Please help me understand it better

1) If we have a bpc model exactly same in classic environment and an unified environment,Will the model in unified environment be faster in performance.If yes then why so?

2)How difficult will be to migrate the development from a classic environment to unified environment?Will it be a total new development or there is a migration tool?

3)I understand that bpc script is replaced by fox script? Is the fox script ready to use or it will come in future?

4) Will the foxscript be faster than bpc script?

5) Will the reports run faster in unified environment?

Thanks

Senoy