There are two stories in Gredown's Wild Cat Western:
Journey of Hate splash page
The Peddler's Revenge splash page
The 20-page Peddler's Revenge opens the magazine, and Journey of Hate fills the next 47 pages.
And each splash page includes the indicia. Someone stuffed up.
Maybe one of these was reprinted from a previous issue and the indicia was carried over. Possible - but I haven't seen a previous Gredown printing of either story.
Maybe Journey of Hate, being the feature-length story, was intended as the opening story but was mistakenly printed second. Possible - but Gringo stories were prominent in Gredowns.
Maybe the cover provides a clue. Journey of Revenge does sound like Journey of Hate - and to be honest, my initial theory was this may be an alternate translation of the title.
Then again, Journey of Revenge is not so far removed from The Peddler's Revenge...
Ah, but what if Gredown cottoned onto their error in time to adjust the cover but not the contents...? And voila, a compromise redolent of double A-sided singles - think We Can Work It Out/Day Tripper and Penny Lane/Strawberry Fields Forever - and Journey of Revenge it is!
Well, that's my working theory until other copies of these stories surface. (And I got to sneak in a Beatles reference...)