In this example, the greens are noticeably brighter and appear more vibrant in the second shot...but then...you mentioned that vibrance and clarity were elevated. In this scene, the green tones look quote acceptable to me, and I think the greens look fine here. By way of classifying these two, I would say that the original SOOC capture looks a bit flat, a bit muted, the way I would want my SOOC jpeg image to appear, and the second image looks very subtly-adjusted and improved. The shot of the dog catching the tennis ball was very much overly saturated and vibrant, with greens that were very "worked" looking, or very much over the top. This shot is perfectly fine on the greens, but the top highlight on the mushroom's cap (at the roughly noon position) looks a tad bit hot to me.
I dunno...I live in a very green area, Oregon's PDX-Vancouver area, and I see a LOT of photos these days from the Columbia River Gorge, forest shots, waterfall shots, in which many shooters are starting to use ridiculous amounts of green saturation and vibrance boosting. Yes, there is a very short window in the spring when the greens really POP!, but the remainder of the year, greens in grasses and foliage and plants are mostly natural-looking. Green is an area in nature photography where the addition of other color, like a bit of yellow, can make the greens appear more-pleasing to many people's eye. Fuji is sort of well-known for this, greens that have more yellow than do other companies' color palettes. I'm not that familiar with the general, company idea underlying the Pentax color palette.