While it may sound unfair that a company as large as Apple is going after a small German tourist agency's cycling path logo, keep in mind that companies have an obligation to police and enforce their trademarks, as failure to do so could be viewed as abandonment, possibly resulting in the loss of trademark rights.
I don't know if American judges would factor in the decisions Apple made in Germany, but there is no such obligation in German law.
I could just as well let the entire world 1 by 1 copy my logo and still sue some random person out of 1000 copy cats.