Before revision:  Interestingly, it was observed that a linear Multi-Layer Perceptron (MLP) with dropout was able to outperform the GCN variants in both the  prediction tasks.
After revision:  Interestingly, it was observed that a linear Multi-Layer Perceptron (MLP) with dropout was able to outperform the GCN variants in both the simple MLP often outperforms more sophisticated deep-learning models in both prediction tasks.