This reminds me of a rhetorical question that I'll modify:
Would you rather fight a big animal with 10 clones, or fight a big clone with 10 animals?
For your question, if we are sticking to size alone, I think me, myself, and 10 of myself could take down an elephant. It doesn't appear we need to kill it (thanks!), so tripping is the name of the game. Everyone grab a leg!