[koito17]

Well, for starters, Fennel is designed to not introduce a runtime over Lua. That means things like lists only exist at compile-time (mostly for macros manipulating code, and partly because linked lists dont make sense in Lua, and partly because technomancy thinks lists should never be used as a data structure).

Moreover, Fennel aims to be a fusion of Clojure and technomancy's own thoughts on what Clojure should have (e.g. pattern matching in the core language).

If LCL is meant to be a Common Lisp implementation, then it will necessarily have a runtime in order to implement conditions, CLOS, etc. So really, your question boils down to "How does Common Lisp compare to a Clojure dialect?" The answer is: they are worlds apart.