At which weight? Wlod is and always was cruiser, and the others are (in their primes) supermiddleweights.
Impossible to say really. When he fights aggressively he looks not great, when he fights on conservatively he's not rawly talented enough to keep top drawer fighters off. But these guys never fought at the weight. If I was guessing I would say that at their very best Calzaghe and Eubank might shade him for very different reason whereas the other two play into his hands and size advantage. But who knows?
He was getting outboxed by Danny Green (almost 40 at that time on top of that, and also a former SMW), so frankly I do not see him outboxing any of those four (a win by KO/TKO is different thing). The fight with Danny was not an exception for Wlod - against Cunningham (2x) he couldn't land anything serious either (no matter how you scored both matches), and his fight against Palacios (clear robbery) shows his weaknesses even more clearly (he had personal problems at that time, but anyway). He way too often just stays hidden behind good guard, waiting for one big shot to land and losing rounds in the meantime. If he lands however... it may be end for Calzaghe and Benn at least, but as I said I wouldn't bet on it.
Joe, eubank and carl probably win on points because, as discussed, despite being huge he's pretty ****. Benn gets knocked out in an entertaining war.