http://www.reddit.com/r/litecoin/comments/1cssqr/the_math_why_litecoin_is_more_secure_than_bitcoin/
Its fairly simple math, try running the numbers yourself.
The 3rd big coin behind BTC and LTC wont be some clone - it will be a brand new alt with a lot of fresh ideas. It was proposed by forum member Tacotime and they are currently finishing up the ideas and implementations for the whitepaper and getting ready to start development. Its going to be big. Very big. It also wont be a premined scamcoin like Feathercoin. It will be legit, with an announced, timed release so everyone begins mining at once.
Until then, its BTC and LTC only for me, I can do without some quick alt-coin pump-n-dumps. Just dont want to get caught holding the bag.
http://en.wikipedia.org/wiki/Bagholder
It is only a "clone" for now, but I think the developers will slowly introduce improvements so it is less like a clone.
Also, don't all the major web browsers basically do the same thing? What if there was only internet explorer (bitcoin) and google chrome (litecoin)?
bitcoin would be useless