Congratulations on your admits! Thanks for doing the analysis and sharing it here.
As an intro, I have initially preferred smaller programs but overtime I feel there is more value in being a part of a larger program when it comes down to recruiting, class options, professors, diversity (I think you will find a lot more of it in a larger program) and finally finding like-minded people. I have seen some of the Wharton's phenomenal professors and programs they offer in a variety of areas, including negotiations, and other areas. They can draw on a much larger pool and richer pool of resources with their size.
It will not be wrong to pick Wharton. Nobody can blame you for overpaying and saying you wasted money on Wharton, except perhaps
JohnJohnJ will likely say that you need a pulse and to take the Haas offer... and he may not be wrong
My take would be that if you are focusing on startups, you will likely recruit off campus and be doing networking on your own through the startup communities. Joining a startup (unless it is a crazy unicorn which so many tend to be it seems), you are likely to forego some of the comp in lieu of stock and having a $100K scholarship may come handy.
I feel you can achieve your goals with both programs. Haas is weaker in all respects but nobody uses all elements of an MBA program to 100% kind of like Excel, 80% of people use 20% of features. If you wanted to get into something very elite, it may require to have a Wharton pedigree but I feel you can put in some elbow grease and network your way around the Valley into a startup of any sort, since being on the ground will likely provide more opportunities to run into people and network.... so in other words, you could save $100K and enjoy warmer winters without trading off too much but if you wanted the ultimate experience and not have any doubts about your dominance, Wharton is almost as good as it gets.