Quoted from TVP:Programming a pinball machine with 50 switches and 100 lights is not rocket science people. Get real.
I don't think anyone is disputing this--at least not me. However, when you look at a AAA title console release, be it on the Playstation, Xbox, or Nintendo, you have legions of programmers that only work on physics engines, another group just for foliage, and a group just for facial expressions, etc, etc. Plus debugging and refining for each console's unique specs.
The market for pinball is several orders of magnitude smaller, and you might have a couple guys looking at code on, comparatively speaking, a shoestring budget, all working congruently on different pinball machines for code updates and such. It's impossible to compare the two industries--other than the fact that they're both designed for entertainment.
Not to mention, these games are all meant to be vended, and I doubt that the average player in the arcade is really looking at the breadth and depth of the machine's code.