Answer
AirPods (2nd Generation) Differences
Non-hook based designed
Available optional Wireless charging case that is more compact than the Powerbeats Pro case
Design that points the beam-forming microphones towards your mouth for clear voice input
Pure white glossy finish
Double Tap gesture for customizable interactions like Play/Pause, Next/Prev Track, Siri-activation
15 minutes in the case gives you 3 hours of listening time4 or 2 hours of talk time.
Powerbeats Pro Differences
Hook-based design
9 hours of playback vs 5 hours for AirPods
Physical volume buttons and Beats logo button
Sweat and water resistant
Customizable ear tips
4 matte finishes: Ivory, Navy, Moss, Black
In-ear design provides more sound isolation from background noise
5-minute Fast Fuel charging gives 1.5 hours of playback when the battery is low.
"Completely re-engineered from the inside out, the earphones boast an upgraded linear piston driver that leverages an efficient, pressurized airflow to create a powerful acoustic response in a small package. Enhanced sound quality means incredibly low distortion and great dynamic range across the entire frequency curve."
Same
H1 Chip for 30% better latency than W1 chip headphones, Hey, Siri, and improved battery
Auto Play Pause when taking out a bud from the ear
Lightning Charging port
Beam-forming microphones, accelerometers, and optical sensors to detect ears
1-year Apple warranty