
Well, yeah, of course they're not as weak (misleading word - toddlers are, pound for pound, not actually that weak, just uncoordinated), because Lalafells are actually adults who just happen to be tiny and consequently have fully-developed brains and the neurological and motor systems to accompany that. 
But come on, you know that they'd be screwed without aether to back them up. Those tiny little arms and legs, even if they packed much more power than an equivalent human's, are still too much of a disadvantage to just ignore without something to compensate for it.

But come on, you know that they'd be screwed without aether to back them up. Those tiny little arms and legs, even if they packed much more power than an equivalent human's, are still too much of a disadvantage to just ignore without something to compensate for it.