Did you mean to say titties or titles? In Arreola's case I would say new titties are likely to spring up at every weigh in
If he came in at the right weight would he be too small anyway? He's a small heavyweight fighting in a big heavyweights body.
To be a heavyweight you don't have to be 7 foot tall, you gotta have muscles and condition that lasts for 12 rounds, otherwise you're just a fat slob fighting in that division. Look at Klits, Haye and Adamek, they ain't fat. They look ripped, steady and conditioned.
People like Botha, Bentt, Morrison, Damiani and Seldon were championship material in the 90s. Arreola is better than all of them (probably).
Guys like Moorer and Ruiz became champs so Arreola could become champ, but he would have to fight a weak champion at the right time. He is not going to be a good champion. I like Arreola, but he is rather limited. He does not have great mobility and handspeed.
Moorer was lucky to meet Holyfield with heart condition, and still needed a judge who will score a round where he was down even. He was definitely entertaining, but I wouldn't say he was good champ (and there is not much to talk about as he lost his title immediately after taking it from Holy).