Asp.Net MVC is close to Rails or Merb...?

Hi,

Since IronRuby is progressing fast, it would be nice to know that
Asp.Net MVC resembles more to Rails Or Merb.

I would prefer to use IronRuby, Merb and Azure ( Windows Cloud Computing
) in future.

Since IronRuby on rails is possible, i think Merb is also possible. I
just dont have any clear idea about IronRuby will be supported on Azure.

Can some one focus more on the above topics please.

Thanks