Also went to Wharton, and I'm a PM. My background was only a CS minor as an undergrad (8 years ago) and that I taught myself Rails in order to attempt a startup. This demonstrated a propensity for software but is completely useless practically. I've learned almost everything on the job.
I use my MBA for: statistics (I'm stronger here than most SWEs), marketing, communication skills, and understanding business use cases. Watching very effective PMs, I think soft skills (leadership, communications) are more highly correlated with success than "technical prowess." The ability to grok technical concepts is kind of table stakes, but being very technically talented isn't necessary (and such talent would probably be wasted).
I use my MBA for: statistics (I'm stronger here than most SWEs), marketing, communication skills, and understanding business use cases. Watching very effective PMs, I think soft skills (leadership, communications) are more highly correlated with success than "technical prowess." The ability to grok technical concepts is kind of table stakes, but being very technically talented isn't necessary (and such talent would probably be wasted).