Gaetano, you seem to have a misconception as to what is meant by angle of attack. You seem to think that it is simply the angle at which the capsule enters the atmosphere away from horizontal. This is incorrect. Angle of attack is the angle at which the capsule is traveling compared to the capsule's orientation - an angle of attack of 20 degrees would mean that the capsule would be traveling in a direction 20 degrees off of directly blunt-end forward. So, Bob's drawings are precisely correct,a s far as capsule orientation to the direction of travel. Since it will be at an angle of attack of >20 degrees, it will be rotated more than 20 degrees off of the direction of travel when reentering.
Here is an image to demonstrate:
This is a wing, not a capsule, but the same principles apply. Think of the chord line as a line running straight down the middle of the capsule vertically. Think of the relative wind as the direction of travel. You can see that at an angle of attack of 20 degrees, bob's drawing is a perfect representation of reality, while all of your drawings show an angle of attack of 0 degrees.
As for bob's first drawing, it can be roughly approximated as showing the areas of high and low pressure on the design. The standard capsule has high pressure only on the heat shield area, while yours has it extending to the side of the capsule itself. Since these areas are most influenced by aerodynamic heating, clearly, the side of your proposed capsule would have a greater need for shielding than the apollo-style design.