SO let me get this strait......
Vegeta ran from cell
Vegeta ran from the androids
Vegeta ran from Frieza
Vegeta ran from buu
Now according to the episodes i watched
Vegeta spend about 10 episodes getting to fight frieza while goku was healing, he NEVER ran away from frieza. frieza eventually reached his final form, and vegeta attempted to go super-saiyan by having krillin injure him so he could kill frieza.
Vegeta went to Cell while Ussj, and challenged him. He let him reach full power, and then faced him in his perfect form. Vegeta's form was sloppy, and he was forced to use his ultimate attack to try and destroy him. The Final flash was charged for about 3minutes 30seconds and he shot at cell. When the smoke cleared, that HUGE ****ING beam only took off some of his shoulder and arm. Cell promptly beat the **** outa vegeta.
Vegeta wanted to fight Buu alone, so he knocked Goku out so goku wouldnt humiliate him again like he did before. (all is fair in love and war
) He took the Senzu bean, thinking buu wasnt that strong, and would beat him easily. He would then heal goku and finish his fight. Unfortuantely buu was much stronger than him, and even the hoel in buu's gut was healed. Vegeta saw this, and realized he needed an attack powerful enough to turn him into tiny peices, or he would just regenerate. The only thing powerful enough was to generate as much energy as he could and destroy himself in the process.
when vegeta found out goku had the power of ssj3, he was pissed to say the least, and wanted nothing to do with him. Goku was able to convince him into saving that last bit of the saiyans, and told vegeta off. He told him how selfish he was, and vegeta changed. He then agreed to fuse.
Since i am in america and have seen the new episodes, i wont spoil the rest for you.
And for GOKU being the strongest, that is NOT true. Gohan was by far the strongest in DBZ. Mystic gohan was 2 times as strong as ssj3 goku. GT doesnt count cuz everyone says it is pretty stupid.
**edit**
Gohan was stronger ssj than goku who was ussj in cell saga.