I believe, the MS-04 and EMS-10 are the same, although with an engine like it has, I find it hard to swallow...
The Gundam scene seems like recorded footage from when Amuro disabled the monoeye of that Zaku in like Episode 1 of MSG.
The RB-79N will probably make it's appearance in Episode 4 which if I remember correctly the title included sea and Jaburo. The episode's weapon will probably be the QEX-04M Aegir listed at MAHQ.