And you wonder why your GM complain about Missions difficulty
Hopefully his GM skills will improve over time, but so far it's still the case that the most damage you do to yourself on your own.
Actually, I think it was a case of the guy who wrote the Mission not giving the players enough credit and so hand-waving that route.
The smart route got almost no page-space in the module, while the dumb-thug route took up most of it, so it's like they didn't really expect anyone to think of being all sneaky-ninja. Which, this being Shadowrun, is... well... a bit puzzling.