A Tale of Two Covers

This is cover to the 1980 boxed version of the second edition of Chaosium's RuneQuest. The illustration is by Luise Perrin and originally appeared as the cover of the 1978 first edition of the game. It's a piece of artwork I strongly associate with both RQ and Glorantha, owing to its wide use in advertisements for the game during the early 1980s.

This is the cover to the Games Workshop edition published in the same year. Throughout the early to mid-1980s, GW regularly produced UK versions of American RPGs, often with different artwork. In the case of RuneQuest, the UK cover is clearly inspired by Luise Perrin's original but isn't a direct copy of it. Never having owned the GW version, I don't know the name of the UK cover artist (please enlighten me in the comments). Whoever he is, there's no question he's more technically proficient than Luise Perrin. Compare the reptilian monster in each version and you'll quickly see what I mean. The warrior woman's pose from the GW cover likewise shows a greater command of human anatomy. Yet, somehow, even leaving aside the issue of the UK version's cheesecake, I find Perrin's version vastly more compelling to me. There's a mythic, dream-like quality to it that I think better suits the tone and content of RuneQuest. 
Am I mistaken?