Nadaraya Watson is better than TMA. If you load them up and watch both of their middle lines the TMA Bands are a bit faster but have false signals.
If there is a bit of a delay the Nadaraya Watson Estimator is only a bar later than TMA for new trends but wont change signals as often.
Pink & Green is TMA, Blue & Orange is Nadaraya Watson Estimator on 15 min Chart