Well, if you planned it right, with far less planning required than it takes to make FP+ reservations months in advance I might add, you do not crisscross the park much at all. You need to compare apples to apples. Since FP+ really only gives you one shot to get on one major ride in a single park per day, you should only compare that to getting one of the old FPs. Thus, in your scenario, you would only be crisscrossing the park once to get the equivalent. And, one would hope that you could easily plan to get that one FP while you were in the area anyway. You are trying to compare crisscrossing the park several times to get multiple meaningful fast passes to not having to crisscross the park and only getting one.