Haven't heard a 2133 yet.
hear are the specs on the 2152 ,looks good to me
This new model offers more power and torque than its predecessor, with no added weight. User-friendly, with an ergonomic, easy-handling design. Features include a compression release for easy starting, a side-access chain tensioner, and a steel spring anti-vibration system for exceptionally smooth cutting.
Engine Displacement 51.7cc/3.2 ci
Power 3.3 hp/2.46 kW
Weight, less Bar & Chain 11.0 lb
Max. No-Load RPM 13,000
Fuel Capacity 16.9 fl oz
Oil Capacity 9.5 fl oz
Standard Chain Pitch .325"
Recommended Bar Length 16" - 20"