To be honest, your job prospects won't be dictated by whether you do an exec or regular MBA, but by your English ability.
Your biggest obstacle standing in your way is your English -- no matter what kind of masters degree you get. If you want to be managing people in an English speaking country (or in a company that operates internationally, where English is the common language), you need to do whatever it takes to improve your English. Hire a private tutor if you have to. Because based on your post, I really don't see how an MBA of any kind will help if your English isn't good enough. It's not easy, but it's certainly possible if you continue to work even harder at it.
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