I again am come with some important questions and/or topic of discussing to you. I hope you can do some help to clarify it to me. Yesterday I have a purchase come in to my lair that was import from the Amazon to it. So I can help you imagine, you can see it where it can be here:

This image is take today from kitchen doors of my apartment unit. This package I talk about is place by that pillar of wooden you can see there. As maybe you can tell, I am not using this entrance very often so there is some spider home above this one, so when I am grabbing these package I am just crouch and grab it with the one arm and lift it into doors. Note that it was full lift it and no drags or thing like this one! Anyway I am take it inside and the package looks as this one:

You can maybe already notice what is my issue for it! Here clear text it will be:

So of course I am very shock. I go to do some calculation on this package to measuring my might. Here it is picture of me on some scale with no thing except some clothing upon body:

You can read dial it is 146.2lb (66.32kg/10.44st in communist unit). So now I am held package and take another image of dial:

And you can read it still to be 171.6lb (77.84kg/12.26st). So we can have a bit of maths to check weight of my package:
171.6 - 146.2 = 25.4lb (11.52kg/1.81st).
Now, this is weight that feels so light to me. As I say, I am lift this into doors with only one of my arm, and I do have two arm! This is handicap of half (50%) onto my powers. Worse yet, we can check tutorial for lift previous:

This is displaying two men. And I think unless these men each have very sticky finger, they will use two arm each to lifting this package. This is 2 men * 2 arm = 4 arm total. And I am just use single arm to do these labors. So if we continue calculation then we can have 25.4lb can be lift only by 4 arm of regular men, so each regular man arm can lift some 6.35lb (2.88kg/0.45st). My one arm can lift this 25.4lb alone, so with two arm I can lift at least some 25.4 * 2 = 50.8lb (23.04kg/3.63st). Regular men too have these two arm, so regular men can be lifting some 6.35lb * 2 = 12.7lb (5.76kg/0.91st).
So here we can do a compare of these and see that I am lift 50.8lb and regular men can lift 12.7lb and it is 50.8/12.7 = 4. So what all my friend on forum is thinking? Is there some issue with my mathematics here? Or do I really have strength of four regular men? This would be very surprise of me! For examples, we know from this here it can be possible for men to have strength of ten regular men, definitely:
But also we can see this is only with some help of powerful genie magic. Of course I am only 4x powers not 10x powers, but this is still some 40% of the powers genie can grant! How it can be possible for me to attain this one?
I hope some of you fine friend can help me get to bottom of this curious. Thanks to you all for this consideration.