A fairly poor, uninteresting and poorly put together list.
The Golden Gun: Really? It is a "one shot, perfect accuracy, long refire time"-weapon. There are a plethora of these kinds of weapons in gaming. Just pointing out The Golden Gun is silly.
BFG: This one ain't good either. It was just the first "ridiculously powerful"-gun in fps gaming. Beyond that it has no really interesting characteristics. If you really wanted an interesting powerful weapon of this type, why not go for the Redeemer from Unreal Tournament. Usually hard to find, huge kill radius, instant death, controllable rocket, Slow speed, and possible to shoot down. See this is an interesting weapon.
Chain Gun: Another weird choice. Or at least weird that the focus would be on wolfenstein. The chain gun in all games it appears (or variants appear) it is always a solid choice. Had the focus been this type of weapon across all games I would agree. Otherwise... meh.
Gun Blade: ... I like gunblades... though lets be fair. It is not a weapon that makes a whole lot of sense.
A small sampling of weapons that were missed:
Plasma Cutter from Dead Space. It is rare that a starting weapon can be this effective for the entirety of the game and for it to be this much fun.
Force Gun also from Dead Space. For sheer effectiveness.
Magnet Gun from Red Faction Armageddon. Most fun you will have with a weapon since the Gravity Gun from Half Life 2
Head Hunter from Bulletstorm. Guided bullets.
Gravity Boots and Energy Leash combo also in Bulletstorm. You need to try them to understand.