There are not many tanks in Ukraine. Probably, the units are thinly spread across the frontline and used carefully and only where anti-air defence is well developed. Russian helicopters are a serious threat. And small UAV like Orlan is ubiquitous, a real scourge ofThe last paragraph:
And despite recent Russian gains, the overall strategic balance still appears to favour Ukraine. They have significant reserves of personnel available. The Ukrainians have also demonstrated better tactical leadership, morale and strategic planning than the Russians.
The Ukrainians still don't seem have have deployed much of their tank park. Are they saving it for a bigger counteroffensive, do they not have enough troops to man them, or are they leery of a big, pitched battle?