Complex sentence: Though of limited towing capacity, this design tends to be more stable than 2 (or more) wheel trailers because the single wheel can tilt from side to side when cornerning (as the bicycle itself does,) allowing for coordinated turns at relatively high speed.
Split into simpler sentences: Though of limited towing capacity, this design tends to be more stable than trailers with two or more wheels. The single wheel can tilt from side to side when cornering (as the bicycle itself does,) allowing for coordinated turns at relatively high speed.