I have read your article using a translator and it was very interesting, well done. In one section you compare the T-90 and the T-84, you state that the firepower is similar, but previously in the article you mentioned that the ukrainian guns are equivalent to the 2A46M-1 gun. Can you give more details?
The Ukrainian gun by the opinnion of users is superiour in many aspects to 2A46M-1 gun. But in general it is not wrong to say that the firepower is basicly similar, also taking into account new APFSDS fielded by Russian Federation. Though Ukraine may offer some advanced tank lunched guided missiles, which are 100 %immune to APS and use top attack function.