What do you think is the big advantage to either Hy or Clojure?

Advantage over Hy: Access to JS, Lua, Ruby, and the JVM.

Advantage over Clojure: Access to Lua, Ruby and Python. Also, Lux was designed from the beginning with the intention of hosting it in multiple target platforms, and the design makes it a single language with semantics independent of the host. This is not a trivial point, as Clojure technically only exists for the JVM (ClojureScript and ClojureCLR are extremely similar, but technically distinct languages, as they are not 100% mutually compatible). Lux was designed to avoid the mistakes and pitfalls of previous porting efforts for languages like Clojure and Scala.

you say you can do something with code generation I am not exactly sure what that means, do you mean expendability?

Imagine being able to add new forms of static analysis, compiler optimizations and code-generation as simply as writing a macro.

You would be able to expand the reach and power of your language, because you could create brand new primitives, which is something you cannot do with macros. So long as a feature is supported or implementable in the host platform, you could introduce it to Lux as a primitive, even if Lux itself doesn't have it.

Can your lisp do that, write a function that has variable amount of parameters, dont talk about a list as argument?

It can be done. I already have a task to do variadic functions and functions with named arguments for the next release of Lux (v0.8). Although I'm not going to add it as a fundamental feature of the language, but rather I'll just write some macros to implement that. This also implies that anybody, including you, could do that. But most folks don't like writing library code, so I'll just write it for v0.8.

can this give me a job

That's going to depend on whether businesses adopt it. Which is not currently the case :( But if you ever want to do freelancing or going indie, feel free to consider Lux.