Yes it is. Brett isn't a world class finisher for starters, there are plenty of other wingers i would trust in the final 10 over Brett these days. The bloke is just a shadow of his former self without his rapid pace, he has struggled massively without it and is nothing more than an average winger these days.
Jmoz then yh fair enough he's a top defender, everywhere else though he comes up well short against the best. Struggles to break tackles he should, struggles to setup the players around him, struggles to creat something out of nothing, etc.
Overall our backline is extremely weak compared to other sides, i'm honestly struggling to find a worse backline in the NRL. Hopefully the Morris' aim up or are shipped out come seasons end and we can pick up the faster more powerful outside backs that we need.