It isn't. Because we're talking about vastly different types of waste with vastly different toxicity and radioactivity. Power plants also don't produce liquid contaminants. This difference means not only quantity differences, but also vastly different methods for storage are required. Ability to contaminate the local environment is also vastly different. Please stop just guessing at what waste actually involves and read up on it before making such claims.

Almost everything on Earth contains some potassium, uranium, or thorium and thus is radioactive. Its all nuclear waste (from many big, nuclear events in the cosmos), just different varieties