You also have the ability to add a symbol or design from a list to your clothing that can have it's color changed ( you can add the logo from one of the in game brands to your clothes and cosplay/role play a hype beast if you wanted)
3 lets you clothe Head, Eyes, Face, Upper Body, Underwear, Lower Body, Full Body, Feet, Hands, Backpack and lets you change their colours. Tone is completely different in 2, more grounded in reality which allows the wacky side and emotional scenes to hit harder.TL DR - Tone, Customization of player and safehouses, Mission style, player character's personality.