Actually NO - overall, the 22 (I take double players) are not that good, which makes the bench irrelevant.
Let me explain with India - take their best XII right now : Dhawan, Sharma, VK, ATR, MSD+, Kedar, Hardik/Shankar, Jadeja, Kuldeep, Shami, Bumrah
There is absolutely no one remotely close to at least 4 players - Sharma, Kohli, Kuldeep & Bumrah. Arguably, we can add Shami, Dhawan as well in that list - that's minimum 4, could be even 6. So, they have a BIG problem at bench strength - replace these 6 players with any one, may be, only 1 player can serve the purpose adequately - Pant. However, ideally, Pant shouldn't be in reserves. May be, Chahal can serve somewhat for Kuldeep and BK might replace Shami for his combined skills; but still there is a massive hollow between first choice and back-up.
For PAK, if I take same (won't say best, which is another problem - PAK doesn't know their best XI), this is probably the XII: Imam, Fakhar, Babar, Hafeez, Malik, Sarfraz, Imad, Shadab/Fahim, Amir, Hasan, Shaheen.
Only 1 player (Babar) is genuine irreplaceable in that starting XII, and some of the players actually don't deserve their spot in starting XI.
Therefore, for Indian team, if just 4 players are withdrawn/replaced, that team will almost collapse; but that's not the case for PAK - apart from Babar, every player can be replaced and overall team strength won't go down much. I do believe that, PAK playing their first choice XI, still AUS would have won both games, may be a little more tighter.
Despite being team game, still cricket is an individualistic sports, where person dominates the game and PAK doesn't have anyone to dominate the game single-handed like the 4 Indian players. This can be bad, but can be good as well depending on over all squad strength. For example, that German soccer team between 1980-1992, made 3 WC & 2 EURO Finals, because of their outstanding squad depth, but there wasn't any superstar who couldn't be replaced, like Maradona, Platini, Zico, Baggio or Enzo Fransiscoli.
At one point, Mo. Akram, Aquib, Amer Malik, Shoaib, Mo. Zahid, Shahed Nazir had to be benched when PAK opted for 2 spinners and Mahmood/ARazzak picked as all-rounder, at same time IND had Kuruvilla, Doda Ganesh, David Johnson, Mohanti or Paresh Mahambre opening the bowling, and they sometimes did perform well also - that's called bench strength or lack of it. Now, the role is almost reversed - it doesn't matter much which XI is picked for PAK, and I am not sure if think tank knows the best XI either.
