The sound systems in a local cinema will never be as good as a very good home system. They may have more dynamic range because of their horn speakers, but the finesse is lacking. The speakers (usually made by JBL) and power amplifiers are made for maximum output, ruggedness and reliablilty, with sound quality a second consideration.

The "A-chain" electronics like the projector preamps and equalizers are pretty generic in quality compared to the better equipment you can buy for home use.