The other night I was running tests to see if my laptop could use a Mod pack to join a server (sadly the result is not). Since the instructions that were provided for me to try and join the server required Feed The Beast I download it's launcher and opened up the Minecraft Launcher just to confirm my Username.
At the top of the launcher I had this message
You are running an old version of Java. Please consider using the new Minecraft installer. which doesn't require Java, as it may make your game faster.
When I clicked the link it opened up a new tab in my browser and wanted to download a
Minecraft Launcher .msi file. I didn't at the time.
Now I have 2 installs of Minecraft, one on my laptop (Aura) which I use for getting updates and one on my Main Computer (C.C) which doesn't connect to the internet (when I do updates I normally wipe the .minecraft folder on C.C and copy Aura's), with that I don't update Java on C.C unless I really have to (as was the case when I upgraded to Java 7 when I was installing mods, prior I was running Java 6).
Now the idea of updating the Launcher on C.C to make Minecraft faster sounds good to me, means I can add more mods, however what I don't get is how a different launcher makes Minecraft itself faster, I was under the impression the launcher closed when Minecraft started and if Minecraft was shut down properly it restarts the launcher.
So I am wondering, How does a Launcher which doesn't use Java make Minecraft run faster?