Arlovski would have had a chance because the guy was and still is very talented but I have a hard time picking against CC here because honestly even in his prime Arlovski never had a really good chin while CroCop's was solid so I think it would have been a great fight right up to when CroCop inevitably knocked Arlovski out.
"If you get hit and it hurts hit him back you not knocked out yet."-Joe Doerksen
The Toxic Terrors (FFL)
Georges St. Pierre*Sarra McMann*Pat Curran*Patricio Freire*Uriah Hall
NP FFL Team Toxic Challenge
Fabricio Werdum*Gilbert Melendez*Rick Hawn*John Dodson*Urijah Faber