See, these tiers exist for a reason. Some pokemon are better than others, and if you're playing a game, more likely than not you're doing it to win. So most people are going to pick the good pokemon so they can win, or pokemon that can counter those. Yes, originality is appreciated, but originality does not win games. If I want to win something, I'm going to use the best pokemon I can, which more often than not includes pokemon like those above. I actually didn't use any of those pokemon in 4th gen, but I can see the supposed problem. And there are plenty of amazing UU pokemon too, it's just that there's so many more pokemon that it's not as much of a problem. By the time all of the 5th Gen games are out, we're gonna be seeing the same pokemon in UU and lower tiers too.
In Fearful Day, In Raging Night, with strong hearts full, our souls ignite. When all seems lost in the War of Light look to the stars--For HOPE BURNS BRIGHT!
I don't care about my pokemon other than their battling potential. If they aren't good at battling, I'm not going to use them. If I have to spend time getting my pokemon to be perfect, so be it. I'll battle your pokemon that are "raised with love" anytime, and you know what? I'll probably win.