What are the differences between Pit and Dark Pit?

Pit and Dark Pit are extremely similar to one another. Here are a list of the differences from ssbwiki.

• Dark Pit's Silver Bow arrows deal 2% more damage than Pit's Palutena's Arrows at full charge.
• Dark Pit's Silver Bow also has slightly more knockback than Pit's Palutena's Arrow. However, It is slightly slower.
• Dark Pit's arrows have less range and cannot be curved as dynamically as Pit's.
• Dark Pit has no light rings to charge up his arrow.
• Electroshock Arm deals strong horizontal knockback which KO's sooner than Pit's Upperdash Arm if hitting foes off the side blast zones of the stage. It also does 0.5% more damage. However, it has less vertical KO power.
• Electroshock Arm also has the electric effect.
• Forward tilt deals less knockback.
• Dark Pit's Final Smash is different.
• Dark Pit's victory theme and poses (including quotes), and taunts are different. His "NO CONTEST" pose is also different.

Here is a video displaying how incredibly similar these characters are.

Also, according to these measurements, Dark Pit's perfect pivot is about 12.5% longer than Pit's perfect pivot.