Well. No.
It's like a mathematical proof. 
E.g. if you want to XOR all byte of the input onto the same variable, you need O(n) because you are reading the input. As simple as that.
When making compromises, let's just assume Qubic is safe. I think it's rather 66% safe as instead of 51%, agreed? I mean 66% is even easier to remember.
1) It seems interesting.
2) 'it seems' is not 'it is'.
3) Examples aren't proofs. It could be easily vice versa when bigger numbers are involved.