Merkle tree instead of sparse merkle tree?


I’m researching which l2/sidechain I’d like to use. One of these chains, plasmacash, touts is use of sparse merkle trees instead of merkle trees. They claim that helps in the detection of fraud, see more here: What’s a Sparse Merkle Tree?. If you’ve been around the Ethereum… | by Kelvin Fichter | Medium. Having read matic’s litepaper as well as this article (What is Matic Network?. Matic Network provides scalable, secure… | by Jaynti Kanani | Matic Network | Medium), I surmise that this project is using merkle tree proofs rather than sparse merkle tree proofs. Can anyone speak to why?