Where can I find reliable gun breakdown content?

It seems like every video comparing the AUG to the M416 is 2y old. Or its the AUG vs M416 vs SCAR-L and theres literally 1 difference in damage. When the only way to compare the trade-offs with guns that similar would be the reload time and firing rate etc, and the vids doing that are super obscure and hard to find...

Just seems way harder than it should be. Where is everyone else getting their info?