It isn't really a rating of mild/hot/atomic advantages, it's one offers fungibility and privacy and the other is a public ledger--they have vastly different design goals that will separate them more and more over time.
Monero is super great but would have trouble scaling to bitcoin levels of transactions. I hope they continue to develop it as people begin to consider it more.
How so? The blocksize and fees automatically adjust. The blockchain will get bigger, but as I understand it, there are some theoretical ways to trim some of it. Supposedly trimming isn't a big priority because the theory is that storage capabilities will grow along with the blockchain.
