Kindly mention how many Indian "fast" bowlers bowling in IPL are better than Rahat, sami and wahab? Are you talking about the Unadkats or thakurs? Just because the aforementioned Pakistani bowlers arent good enough to play international cricket for Pakistan doesnt mean they are inferior to Indian trundlers who get smashed time and time again at every level.
Bopara is a non-entity when it comes to bowling now so i dont know why you are even mentioning him. Samit patel did well but he is playing as an all rounder, not a frontline bowler similar to sammy.
Some of the local bowlers of Pakistan were Shaheen shah afridi, Ibtisam sheikh, zafar gohar, umaid asif, sameen gul, Mohammad irfan jr. Etc. Let us know which of India's vinay kumars, unadkats, thakurs etc. or any other local bowlers are better than them.
Quality of overseas bowlers is better in IPL but some of the players like johnson are playing on reputation alone. Obviously more money has a lot to do with it because bowlers, especially fast bowlers have to choose these leagues carefully and preserve themselves for the ones paying most money.
Firstly, Rahat and Wahab are frontline bowlers for Pakistan. Why are you comparing them to the likes of Unadkat and Thakur? India's frontline bowlers (Bumrah, Bhuvneshwar, Shami etc.) are better than all of Pakistan's frontline bowlers except for Amir and Hasan, but even that is debatable.
Sami is a hero in the PSL but that is because of the pathetic standard of batting. He is unlikely to fare well in the IPL. Guys like him, Rahat and Wahab would probably not even get IPL contracts, and you are using them to prove that the quality of bowling in the PSL is better.
The likes of Umaid, Irfan junior, Sameen etc. are no better than the likes of Unadkat and Thakur. They will flop in the IPL considering the standard of batting there. Similarly, Unadkat, Thakur etc. will do well in the PSL - a league of minnow standard batting.
Spinners like Ibtisam, Gohar etc. are worth dime a dozen in the IPL. Every season, a couple of exciting spinners emerge in the IPL. It has been two days only, and that young leg-spinner from MI has started to make an impression.
The difference is that since the talent pool of the IPL is very vast and there are lot of high quality overseas players, it is difficult for the local players to stand out. Someone like Ibtisam would probably not even get an IPL contract.
Shaheen Afridi is a very exciting prospect, but India have exciting prospects in the same age group too, which we saw in the U-19 World Cup. However, as I stated previously, it is more difficult for those bowlers to get games in the IPL because of the high competition.
If Shaheen Afridi would have been in India, he would have not managed to break into the Indian team yet. Similarly, the U-19 pacers that we saw play for India would have played games in the PSL by now if they were Pakistani.
The quality of bowling in the IPL is better than the PSL. In terms of local bowlers, it is pretty much even. However, there is no comparison when we factor in the foreign bowlers. The only reason the bowling looks better in the PSL is because of the massive gulf in batting standards.