Litecoin doesnt even have an ios wallet, its only meant for crypto nerds and traders. Its userbase for a coin with 100+M marketcap and excisting for years already is laughable. See here how poor it's doing in adoption
https://bitcointalk.org/index.php?topic=1285762.0, its only interesting for trading it for btc and vice versa, not interesting for non traders at all.
Demand for litecoin has been going down in 2015, see how bitcoin is almost half the price from its all time high, if litecoin would be as interesting as in 2013 its price should be higher than its $3 now. This shows bitcoin going up doesnt guarantee litecoin to follow, cus bitcoin actually went up but litecoin didnt follow at all, u can see its price now its 0.008.
Your second argument holds true for every altcoin in existence. Remember when mastercoin was $160 a coin? That relationship went from 0.13 to 5 x 10^3.