Balance in this game is very asymmetric, and it's difficult to compare units on a one-to-one basis. That's slightly less true for tanks, as they all fundamentally have similar characteristics: They're all big hunks of steel with big guns. So, I made a simple spreadsheet and compiled their Regipedia data in a convenient place.

It's a very wide image, so it's not exactly convenient to view in Steam, so you can also just download the Excel file here[files.catbox.moe] (Google Drive is a pain in the butt, it really wants you to use Google Sheets).