I'm saying Bowser seems to be the easier option to win among people that don't play on professional levels, even in 1vs1's. Just look at Bowser's success rate compared to other characters. Now, whether Bowser keeps that spot or not in more professional games(when Sm4sh has been out for a year or 2), remains to be seen. But...the way people played in the tournament(nobody was really above the mid-skill level due to it being their first time) is the way Sakurai intended for the game to be played. So, he blatantly made Bowser way overpowered for his demographic. The lack of Samus success rate vs Bowser's, and even Hugs not wanting to play Samus at the invitational, proves just how badly Sakurai seems to understand proper balancing.
You're right. I mixed up my words.
I'm not saying there's no ways at all to counter these, I'm saying Nintendo boosted it's effectiveness unnecessarily even further. Shield grabbing has been a thing in every Smash, but it's been especially powerfull in Brawl, and now they seemed to have buffed it even more, further encouraging everyone to shield first, act later. Yet, the opposite was necessary, encouraging people to not be afraid to attack.
As for Bowser, yes. He was indeed quite godly in FFA. Also notice how he completely annihilated the competition in 1 vs 1's and was the only one that made it to the finals. Sheik and Toon Link stood no chance in the 1vs1's. Samus hasn't been shown a single succesfull moment in either 1vs1 or FFA yet, save for Bill's all-items matches where mostly the ridiculous amount of Final Smashes decided the winner. I specifically keep mentioning Samus because Sakurai called her the most powerfull character when everybody and their dog could tell she wasn't even close.