Why is it that all Cleveland Sports teams fail when there are High Expectations?

Let's take a look at the recent history of Cleveland Sports Franchises:

The Browns: Headed into last year fans realistically had to hope that the Browns just returned to some level of respectability. Charlie Frye started and lasted in Cleveland for all of one game. Based on the performance of the entire team, fans had to think that the Browns were going nowhere fast. It turns out that they did not go to the playoffs, but only after playing well, getting the fans expectations up, and putting up a clunker against the Bengals, and losing at Arizona. They did manage to beat SF in the last game, but by that time it was too little, too late.
Headed into this season, they had HUGE expectations. It appears that based on the schedule they MAY win three games this season

The Cavs: Two years ago they were expected to make the playoffs and not much more. Instead, they go out and beat Detroit, and go to the Finals. Headed into last year, they were expected to compete for a title. Instead, they spent a good part of the season underperforming, got into the playoffs and fell to the Celtics in 7 games, leaving fans to wonder what could have been.

The Tribe: They were one game away from the World Series two years ago and expectations were high headed into this season. Instead, they fell flat on their face right out of the gate and never managed to right the ship, or at least not in time to make a serious run at the postseason.

I think the key here is to place no expectations on your Cleveland Sports Franchises, they simply can't handle the pressure of being expected to win.