You can't just take a blatantly questionable thing and pretend it means nothing, and then wave your so called Photoshop knowledge around (as if it even means anything in relation to the Wario picture) like it's a medal.
I know Photoshop, I study it in college, and have done my fair share of experimentation with it over the summer. And I can say I don't know why you think the Wario point means anything in relation to Photoshop.
The problem with the Wario image (and the Ganondorf one) is that it not only looks strikingly similar to previous images of him (because that is negligible to an extent), but you can see that the texturing detail is just like it was in Brawl. It's on the realistic, dull side. The Smash 4 characters look a lot more colourful, and generally look well differentiated from their Brawl artwork or CGI models due to the shift in art style.
While characters having past renders that have similar if not identical poses to their Smash 4 renders is not unheard of:
There is ALWAYS a noticeable difference in how they are textured and proportioned. Wario and Ganondorf are looking exactly like their Brawl selves and look very out of place. Falco also looks identical in proportion of the face but the leaker managed to remember to colour him a little brighter.