Even that is wrong in regards to forge and optifine. You might have to install them directly when using the other two, but forge and optifine can be run from magic launcher as long as Forge is placed before all the forge mods and optifine is placed dead last after everything else.
Edit: Though one thing to note, with Magic Launcher the game tends to reset achievements every single time I restart it, though I think it has more to do with some of the other mods I have installed.
I actually looked into the resetting achievements thing, and it's not a Magic Launcher issue, it's a vanilla Minecraft bug, where as if the Jar is ever modified, it triggers a reset of the achievements. Kinda of a pain in the butt, but whatever. I gave up on em till it gets fixed. Completed them ALL once, and then they got blanked. Quite irritating, LOL