I think so. Lucas Browne is fighting for a belt and he fucking sucks. Could Verhoeven have a competitive fight with anyone in top 5 like Joshua, Wilder, Parker, Fury or Ortiz? Nah, tbh i don't see him being able to beat Povetkin, Whyte, Breazeale or Miller..
Training accordingly, he could probably beat a top 10-25 boxer. Someone like Hammer, Duhaupas, Pulev, Washington, Takam.. these guys.