if Litecoin increases bitcoin, it must be better in terms of transaction speed and stable selling value. seeing litecoin is still far from bitcoin this means litecoin is less able to replace the position of bitcoin and litecoin must be able to compete with other coins that are equivalent to eth, rippel, BCH and etc.
I also think that because litecoin has so far remained behind bitcoin whether it is in terms of transactions or in terms of usefulness and don't forget that bitcoin still has a big appeal for people so if litecoin defeats bitcoin later I think it will take a long time
Litecoin will never in the same level as bitcoin, it has been used as an alternative way to the bitcoin network and no more, litecoin is lack of innovation. I will not put a lot of hope on this one. remember a lot of people are saying this just to create such a FOMO to the litecoin or even shilling it. That's actually true if you have been seeing the fact so many threads like this one.