I am a stats guy bro
For the purposes of keeping it rational and along the lines of logic and reason I would like to make a small contribution to this thread based on nothing but objective facts. Since we all know that when it comes to fast bowling the best judge of a bowlers ability is when and how they perform in conditions that are not suited to them. For this reason let's look at some numbers (ODIs since sample size is bigger):
Overall Hasan has played 30 games in which he's amassed 62 wickets at 21.40 a piece with an Econ of 5.29 and an SR of 24.2. In all these games hes taken
3 5fers 1 4fer AND
12 3fers
Overall Bumrah has played 37 games (7 more than Hasan) in which he's amassed at 64 wickets (only 2 more than Hasan) at 22.50 a piece. His Econ is 4.64 with a SR of 29.0. He's taken
]1 5Fer 3 4Fers and only
2 3fers
Anyone with any sense of how stats work would identify that Hasan is the superior bowler here, he's got more wickets at a better SR and if Hasan isn't taking 5 or 4 fers then he literally takes 3 wickets every other game. Bumrah on the other hand only has 2 3fers as compared to Hasan's
12. This also implies that if Bumrah doesn't have an all star day he has not contigency and goes missing while if Hasan isn't doing a 5/4 wicket haul he makes sure that 33% of the opposition scalps are at least secured individually by him alone.
Now lets see how they fare in home conditions where seam bowling ideally should be touted as difficult due to flat decks.
Bumrah has played 17 Games in India in which he's bowled around 147 overs (approximately) and averages 29.88 (which is 7.38 higher than his career average). He also has a SR of 33.8 (almost 4 points higher than his career SR as well)
In Contrast Hasan has played 12 games in the UAE and average
14.70 (which is 6.70 less than his career average). His SR in these games is 21.8 (again 2.4 less than his career SR). Another very neat facet is that five 3fers (out of overall 12) Hasan has aquired have come on the dead pitches of the UAE and he's also taken a 5 fer here as well.