A few more hidden secrets that I discovered were about the prototype ships.

Both the F.E.I.S.A.R. and AG Systems prototype ships share the same firepower at C (60).

The Qirex Prototype shares the same durability as the Auricom Fighter, which means it has the strongest shielding in the game, with a Health rating of 100.

The Auricom Prototype is actually as durable as the AG Systems Agility and the Qirex Speed with a Health rating of C- (50) (one hit from a Plasma would cause similar damage to how it would be like in either the two ships), and the only reason why others would think is a tough craft is because of its regenerating shield energy and the fact that it won't get slowed down or shifted off by any impacts and/or collisions. It also has similar firepower to the original Auricom Fighter and because of the handling, we can assume the handling is similar to the Pir-hana Fighter with a Handling rating of E (30).

The Pir-hana Prototype has a similar durability to the AG Systems Speed due to the lighter figure (one hit from a missile towards the Pir-hana Prototype produces similar damage to how it would do to the AG Systems Speed), with a Health rating of E (30) and similar firepower to the original Pir-hana Speed at B- (70).