I think the change to the vertical stabilizer looks true. Here is a photo about the same angle.Sorry, but the IMO only visible difference is the second cockpit and reportedly a slightly longer front fuselage. Everything else is exactly the same.
- the bulge in blue seems only more pronounced due to different lightning.
- the afterburner nozzle in red is simply closed on the B and open on the A.
- and the tail in yellow is the same .
Deino