Sure could've fooled the Germans who requested a damned copy of the T-34 for their usage.
Could the soviets have made a better tank with what they had? Of course.
But same goes for every damned nation in WW2.
And they suddenly were less impressed once they got working captures in WW2 and got a good look inside.
T-34 is a tank that does look very good in very surface stats, but the devils are in the details.
It's armor scheme is very good for the time, and works accordingly if constructed with
right quality of material and workmanship, but it is also a cause of some of its weaknesses.
Cannons were varied, vary in quality and usefulness, the early ones had major issues especially at longer ranges, the later not so much.
Engine was ok
if maintained often, more so than theoretical recommendations in early war, so it kinda depended on unit/crew.
The main weaknesses are the things that are not put on basic stat blocks. The crew ergonomics and optics above all, Allied and German tanks often had a major advantage in those, as T-34 was very barebones in this sort of often expensive equipment. Also radios, namely many early ones didn't even have one at all, and not even intercoms. And once they did, they weren't good either, and the tank was very cramped, thanks in part to its highly sloped armor leaving less volume inside, which got even worse once in later model the missing equipment started to be added, and that made the speed of operation and endurance of the crew even worse than usual for tanks of that era.
This is why German tanks like the Panzer 3's and the Czech captures, clearly worse on basic stat blocks could do so well in armor battles in early war. Sure, their guns and armor may have been kinda sucky, but the crews had good comms and good optics, and were also well trained to use them, which allowed them to spot the other guys first, make advanced tactical moves, and mostly win the battle before it even started by ensuring advantageous positioning and circumstances for themselves.