They're even both named after historical intellectuals- Archimedes and Burke, respectively. Great minds think alike I guess. : P

Part of it is the constraints imposed by 4th ed. For those of us who want to play a robot spell caster, the best option is a warforged warlock, either infernal pact or vestige pact. Personally, I think "the robot that made a deal with the devil" sounds like a bad horror movie plot, but "a robot who can see dead people" has potential.

The recently introduced Sorcerer-King pact with its many melee and close powers would make a really fun warforged warlock build, but... there are no warforged in Dark Sun. : (