Deadlift Leverages Sumo vs Conventional

[Zanji541]

I've always been a numbers guy and don't like answers like "do whatever feels right bruh"
Because you commonly see lifters with imbalances who squat uneven, but it "feels right"
That's an issue needing to be addressed.
So my question to you all you biomechanic savvy lifters out there is, are there any measurements one can look at to determine whether they are more suited for sumo or conventional?
I'm 6'2 and was recently told by my brother I had a long torso, but by what standards?
You often hear youtubers talk about "long torso should probably Dead sumo, long arms should DL Conv." But that doesn't mean anything without a numbers chart. How do you measure these things? And what do you compare them too?
Just because someone is tall doesn't mean they have long legs or a long torso. My brother is the same height and his arms and legs are a good amount longer than my own, but I am making up for it in torso length.

Here is where my issue arises..
I've always been a conventional deadlifter and sumo always felt a bit.. Odd to me, I did practice it for a month or two but then abandoned it so It's safe to say I didn't give it a fair try in comparison to conventional, plus I felt a knee pain during sumo when I reached mid 300's (could be form?)
But as for the conventional, I've always had a hard time in the starting position, I get into position, (knees hip width apart, arms straight down, bar cutting foot in half) but then when I grab for the bar and try to straighten my back, I have a hard time keeping my back straight, it feels like I'm barely able to reach the bar anymore at this point. (Plus I think It caused me to strain my lower back on the spine recently, sitting has been a bitch, same for reaching down)
Is this due to tight hamstrings? Or poor structure for the conventional? So if anyone has any measurements to base this off I'd love to hear it, if it's not measurements, then what am I doing wrong? (I can't upload anything)

[Zanji541]

Anyone..?

[WolfRose7]

it's more of a hip joint thing than a measurement thing

https://www.strongerbyscience.com/sh...ional-or-sumo/

[Zanji541]

And how would I determine which hip joint applies to me? I don't really have x-ray vision 😜😂

[Jason2459]

Train both and compete with which ever is stronger.

[Rags85]

Don't forget about muscle attachment points. That is literally the other 50% of the lever lengths that you will need to know. So you need to know limb lengths, muscle attachment points (so you know where the muscle is even pulling on the limb), shape of your joints. This is an incredibly completed lever system. I would imagine overall muscle mass will also change the direction the muscle is pulling slightly. So factor that in. Too bad there isn't a very simple way to determine which you should compete with.

Train both and compete with which ever is stronger.

Also, if you want feedback on your form, just post a form help video. Infinitely more useful than anything you put into words.