A smaller more mobile pack holds up a little better against runs of momentum in oppositions favour.
A bigger power based pack has better opportunity to turn momentum in our favour.
BUT the second is quite contingent on ball control and discipline. To generate the roll on down the middle to kick down their front door we need to complete and not give away cheap pressure releases. At the moment we don't have the completion rate and discipline, but if Roosters can go 50/52 no penalties so can we.
That is more the style of play we have built a side to play, with a big pack of AFB, Toby, Hazelton, Kaufusi, Uele, Colquhoun (McInnes lacked the size but ran like a missile).
Going smaller seems like a concession we can't execute that. And if we can't, then so be it, go smaller to cover the big packs deficiencies, and just have to find other ways to win. The rule change towards more 6 agains doesn't really do us any favours as it opens up more opportunities for opposition with good wrestle to slow our momentum at lower risk.