I disagree. Sharknado 2 took everything that was awesome about the first movie, and multiplied it by 10 while also cutting out a lot of the boring shit.
I don't care if it was self aware, a man wrangling a shark whilst flying around in a tornado, maneuvering said shark so that it gets impaled on the Empire State building, riding it down in a corkscrew manner so that it perfectly cushions the fall, recognizing that it was the same shark that bit off the terrible actress's hand while she was holding a gun at the beginning of film, and then reaching into the shark to pull out the severed arm with the gun so that he can use the gun to shoot more sharks is ridiculously amazing.