In particular, they are in conflict for the placement of the Dresden tile and, more importantly, of the station marker in Dresden. Usually, it seems that the By can manage to do that without failing to get their 70M run completed early. The latter will get them up to 110M more quickly, though. In any case, while the By will have little or no trouble getting into Berlin and having a pretty strong board position, the By owner is not getting much income early and thus will not be able to buy enough stock early on to win the game. 1835 ends just as the exponential growth pattern of the positions peaks, or slightly after that.
Early money is very very crucial.
That money will eventually be company credits for one of this railroads. While that's not nearly as valuable as cash in pocket, it's money that will become useful to him. Player 2 is getting some income in stock value, and while that will become a great portion of his eventual estate, it's not liquid early without giving up the directorship of the By and seriously impacting his long-term upside potential.