No difference really apart from 1 was penalized (as by the letter of the law it should be) and one wasnt.
Disgraceful call really there was no penalty (i seem to remember Shaun Johnson being the only one blowing up about it to the ref at the time), however one ref's incompetence shouldnt excuse any similar illegal tackles.
From memory Joseph Tapine got charged and stood down a match for a similar sideline shoulder charge on Matthew Dufty so who the f knows how they rule on them.....there's no real consistency.
guess we disagree then. The rule was brought in to protect the player. as shown in the photos, the only one at risk there was billy. They were both running flat out, billy was slightly behind and coming at an angle, Sosaia Feki was aware and already moving his body weight towards billy. This wasnt unseen, front on and involved the use of arms and hands or at least one of each. he didnt hit him in the back he caught him under Fekis shoulder and was reaching for Fekis lead arm. IMO not a shoulder charge.
Spot on front on shows hes just barging him out. It is already common in the NRL, it wont set much of a precedent. I reckon douche bags like Mic Ennis were just talking up shoulder charge, which is a different thing all together and was outlawed due to head high tackles gone wrong. Barging a winger over the sideline is fairly common. And as per the photos 1 arm out for the tackle and the other to brace for the impact. which is more front on than the footage from behind shows. hes off based on those pics.