The D/T rating is for the Challange. The rating for the container is a 1.5-2.
To log this cache you must: Have found at least 50 caches
with a D or T rating of 5 stars.
The accumalated D-5 and the accumalated T-5 ADDED TOGETHER is the number you are looking for to total 50 or more.
Screen shots are desireable for proof.