PGDE vs PGCE –*Specific questions

I have read several PGCE vs PGDE posts on TSR, but I can't say I understand the differences yet. I plan on doing secondary teacher training in England, specialising in Physics with Maths.

I hope answers to the following questions would help:

1) So far as I understand, PGDE is exactly the same, but 60 of the credits are at masters level (rather than, presumably, a lower level). Are there any other differences in terms of course structure?

2) Are the any differences in terms of recognition in Scotland? I know Scottish Unis offer PGDE whereas English Unis offer PGCE and some PGDE – however, my questions is about recognition, employability. Are there any differences?

3) Which is more internationally recognised? I'm speaking about places like New Zealand, Canada and Australia primarily.

4) Finally, as a prospective secondary teacher in Physics and Maths, with a desire to have as wide an international recognition as possible, including Scotland, what would your choice be – a PGDE or a PGCE?

Thanks in advance.