Why do we have two separate threads which ostensibly cover "trains to Worcester"? Doesn't this topic belong under the Cotswold Line?
If you can post links to the two threads you're talking about, we can have a go at answering specifically ...
Taking an initial guess, threads sometimes start off apart and drift into the same direction; sometimes they get merged and at other times an attempt at merging would result in an unfollowable honeycomb of mixed posts.
On a rail forum, we also have a network issue; trains run through from one route to another so things will turn up in multiple places ... London to Reading, through the upper Thames Valley and onward to the Cotswold line to Worcester, Great Malvern and Hereford. And on the Worcester to Great Malvern section, we're talking of a line / board that's shared with a train from Brighton via Bristol too ...