1.The games are great and most of the good games on the websites you sited are here. 2.You can talk to game developers (I was able to small talk to the developer of Drunken Master) 3.The Mods, Admins and Users are great and friendly. 4.The forums are clean, friendly, spam-free (most of the time) and just a great place to chill and have fun.
Stick Page vs XGen Studios vs Armor Games vs Max Games vs Newgrounds vs Kongregate vs Crazy Monkey Games vs Addicting Games vs Hero Interactive vs The Casual Collective vs Miniclip.. Alright, I don't have enough time to list more.
Anyway, this is the umpteenth repeat of the same topic. Armor Games has the biggest offering of games compared to those sites in my opinion.