You need a mix. Sharks have a whole bunch on high-impact ball runners, but they are also high-risk. We've seen BHU, Rudolf, Williams and Talakai all get exposed in defence late in games/halves, and Hunt in his brief NRL experience has been a 30-40 minute player. Impact is great, but you also need some guys who can pass the ball, and who will make that 78th minute tackle instead of throwing out an arm.
Tolman's ptb's are actually decent btw. From last season Williams is the best by far, then Rudolf. I'd have Tolman third. Not sure how Finucane compares.