Yeah and him too, but honestly speaking hayne, gallen, jt, slater, morris boys were always going to make australia less competitive. Their experience and talent are hard to replace.
If Hayne was available and assuming he or GI took Walkers spot JMoz wouldn't have been in the team. Jennings was much better this year and I think is arguably a better player overall now. If GI (or Hayne) was there at centre Matautia doesn't get caught one on one with Vatuvei so I think he would have had a much better shot at stopping the second try by Manu.
There is no way Sione is better than BMoz right now, but I don't really think BMoz would have made a difference last night, asides from maybe stopping the second Vatuvei try (which honestly would be hard even for him to do) Sione made the most of the opportunities he got, he scored a try and did his part in scoring the match winner, he was just unlucky the 50/50 call on the forward pass went against Walker or we don't have this conversation, also no way BMoz makes that catch he did. That was absolutely amazing.
Ultimately blaming our backs, even Walker, is crazy talk. We lost because our forwards got absolutely rolled. We scored all our tries against the run of play or off a kick. The forwards didn't set the platform and our backs still almost saved us.