Why do you think pumped storage hydro plants are worse (thank what) ?

They are not ever strictly power plants, rather they provided the much needed buffer to store energy during fluctuating demand and/or supply.

Pumped storage is also completely compatible with both nuclear base load (store extra from base load that can't be easily throttled) and unpredictable renewables sources (store extra when needed, cover - reasonably short - periods of no supply from the source.