ssbb_lover you can beat me in SSBM - it doesn't really matter how much technical skill you have developed in the game it's more to do with how to implement it well with your character and your opponent that makes you a better fighter. Technical skill can lead you so far but if you don't have the mindgames then you will fall short of being a good smasher.
For example (this was a real event) my cousin came around to my place after not seeing him for like 3 months due to exams, holidays etc. We played smash and he was beating me in alot of battles although I had practised alot with techs and got them down to the point where I could do them without thinking much. And all he did was find the right opportunity to attack me. And I was being flashy and not looking good at the same time. And my cousin is what you would call a noob smasher.
Then my fighting skill suddenly clicked in after this one battle (Marth ditto) and I found myself (almost accidentally and easily) confusing him to the point where he couldn't control the battle for one minute at a time because I was constantly confusing him with unpredictable attacks (mindgames). Then SSBM became a hell lot more fun after that particular event.
But you can beat me - pick sheik and then do tilts all day long until i have enough damage to hit me with a fair. That is if I fall for it lol.
Trickz - I agree with you that if you play smash at a basic level (noob style), then beating anyone with any character is possible. Unless you are fighting a against a sheik player. Run b*tch RUUUUNNNN!! (taken from scary movie 1)
Mewtwo is a bad player on a serious level as he has huge lag times between attacks so there's one reason why he is not better than Jiggs. Jiggs is better as he / she has higher priority attacks (side b, fair, bair and the rest attack - die from low percentages!) and has good recovery.