Hi DNJ
There is not just one type of Trumpet, (That’s why arrangers have a selection) and if you compare the Trumpet on the Roland and Yamaha to a live band that plays this type of music, you will find that the Roland sound is a lot closer. (There’s no way Yamaha or any other manufacture can have the best Trumpet for every type of music)
Golden Rule: Always compare the sounds on keyboards etc, to live instruments, (Unless they are unique to the board) not with sounds on other boards.
Regards

Bill