I have used both platforms, while it is true and evident from its proven performance that Matic is a successful project of Ethereum layer2, due to its lower transaction fee. However, I think DOT is a much bigger project which is known as internet of block chain, and recently it has signed partnership agreement with Cardano (ADA). This deal can be mutually beneficial if they come up with an innovative project that could attract huge investment and generates excitement within its community.