Well that’s an M109 Paladin. It weighs about half as much as an actual tank. But if it was fully loaded there’s a pretty good chance nobody wins because it’s an artillery system and it carries a lot of stuff that goes boom.
I don’t care to speculate on who wins between a 70 ton tank and a train. It probably depends on what the train is pulling.
Edit to add - also we need pictures from different angles. From this angle it looks like the Paladin might have simply been de-tracked. But I’m pretty sure there’s more damage as it’s armor is actually comparatively light, rated for small arms and shrapnel.
Technically yeah, colloquially no sane person would judge another for calling such a thing a tank
Nah, I don’t judge people for being wrong or inaccurate, particularly when the colloquial use of a term is as firmly established. Ideally, people would still know the distinction, and I’d prefer to have journalists be accurate at least, but mostly I care about knowing what’s technically correct myself. I don’t need to be a pedant, I just don’t want to be ignorant.