An high hashrate is only one of the many criterions which determine the price. Pesetacoin has an hashrate of about 200 Gh/s, and its market cap is still at less than 40 000$. Litecoin, having no considerable advantages over other coins and a small community, seems overrated to me.
I know that auxPoW allows to merge-mine with any scrypt coin, but I don't think that any scrypt coin beside Doge has a bright future.
I find this comment very odd; it's clear that Dogecoin has no future as a scrypt PoW coin - the network is horribly insecure these days, and that security continues to decline with each passing week.
Your comment that Litecoin has no considerable advantage stands as evidence that you don't understand blockchain security and orphan resistance, and how these are the fundamental properties of a good crypto coin. Everything else is really just fluff at this point, and that's why the most secure chains are #1 and #2 in marketcap.