Is Brazilian Jiu Jitsu really a superior martial art or is it all just hype?

Grappling is indeed a great for sports and even to defend yourself in a fight. But I dont think it is effective for multiple opponents. Yes, it is true that we can defend ourselves with kicks and punches.In jiujitsu you really have move quickly to catch your opponent and take him down or lock him,but what if the enemy is much more bigger? I had a little jiujitsu lesson,but I didnt manage to escape when my nephew sat in my stomach, He is fat and so heavy that i cant afford to lift my body even a little to do some tricks to escape. So I think i will just stick to striking and kicking.You only have to be smarter and should have some vital targets.

I think it depends on the situation because if you are fighting a many numbers of opponent in the street using jiu jitsu alone it won't work. In my own opinion it is better to learn or use mui thai in that situation. but I guest if one on one combat jiu jitsu is good.