Deadpool during the second part of that scene had just jumped clean through a window to the ground, and then proceeded to get hit by a car before he could catch the guy. It is entirely conceivable that he hurt his legs and was in the process of healing during the chase (which lasted like three seconds and he was visibly gaining on him because, once again, hit by a car). Notably, he then proceeded to run with such speed and force that when he shoulder bumped the car it skidded sideways and the door on the opposite side of him was forced open.
It's actually incredible that people are trying so hard to argue against Deadpool's blatantly superhuman reflexes and speed.
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2:14 he shows the speed to casually reach from the top of a car that is currently rolling at like eighty miles and hour and grab a guy without his arm being crushed by the car or the ground. Not as good as either bullet feat, but notable due to how casual and effortless it is.
And it's not like bullet-timing is exclusive to the second film either.
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0:35, at the start of the counting bullets scene, Deadpool leaps into the air and fires a bullet, before doing a little spin mid-air and firing another bullet. What makes this feat so phucking crazy is that, as we see directly after, the two bullets land simultaneously, with one of the bad guys being maybe a meter behind the other, meaning that he did that little twist and fired once more in about the time it took that bullet to fire move approximately a meter.
About a minute in we see him fire two shots at Francis, who almost lazily bobs his head to the side and dodges them. The same Francis who Deadpool fights hand-to-hand. Deadpool then later avoids a burst of machine-gun fire from him, and whether he was dodging the bullets themselves or just dodging the aim, he is dodging the aim of someone who explicitly has superhuman reflexes as a power and who has shown he can easily move quickly enough to avoid bullets after being fired.
At 2:32 before three thugs can do more than move their guns a few inches Deadpool is spinning in mid-air and putting a bullet through all three of their heads.
It's so weird. Deadpool demonstrates blatantly superhuman physical abilities throughout both films, but here Froth and Darth Thor are trying so hard to discredit his blatantly superhuman speed.