Well, we used the "wait for them" approach defence in 2015 - coached by Kearney, and it worked a treat, especially against the Storm who used that very tactic of momentum up the middle and quick ptb's. Our defence suffocated them. Thing is then, we had a brickwall where the whole line was coordinated and moved as one, and the tackles were all "hit and stick".
Either way, we need a disciplined defensive line where everyone plays with and for each other, and tackles are exactly hit and stick. Nothing else will work.