I think we can all agree that iStudying has shown us a glimpse of Greninja's potential. The tournament could have gone in his favor if Esam had taken Mr. R out. Mr. R had two things going for him: matchup knowledge and a Sheik privilege. Esam didn't know how to apply pressure on iStudying in his usual way without getting hit by nair setups. Mr. R 3-0'd iStudying by keeping his distance and punishing hard without getting hit by any big footstool setups. If iSudying had played anyone that didn't know the Greninja matchup or played someone that gave Greninja more opportunities he could have won Beast 6.What does this say about his solo viability? Well I don't think we can conclude that we'll start seeing Gekkouga swarming every top 8 from here on out, but I think the spotlightgot was enough to show that he can win against top tiers, it's just damn hard. Struggling against Sheik doesn't necessarily make a character not solo viable.If that were true, every character in this game would be unviable to a degree.Greninja has a really high skill floor and ceiling, and once you reach it you can even beat the world's best Pikachu.