Accuracy of mysqldbcompare vs other tools like pt-table-checksum

I was curious to hear what everyone's experiences are with using mysqldbcompare vs pt-table-checksum( from Percona Toolkit ) to find the differences between two MySQL databases. I have heard that pt-table-checksum is pretty dead-on accurate in figuring out if two DBs are different, but it looks like mysqldbcompare is able to show the actual row differences better and more clearly in its output. However, how do we know whether mysqldbcompare is as accurate as pt-table-checksum or is it more/less ? Thanks IS