In plain words
Śivādvaita worship: the jīvātma, conceiving of itself as the doer and as the enjoyer, becomes bound by Prakṛti. Only if it attains Śiva does liberation arise for the jīva; that is to say, union with Śiva arises — so it is said. Vīraśaiva worship (the Jaṅgamas) says that there is nothing at all other than the one Īśvara. Attaining Īśvara's manifest glory (power) alone is liberation — so it is said.